Editing Encyclopedia:Copyrights (section)

== Reusers' rights and obligations ==
{{main|Wikipedia:Reusing Wikipedia content}}
The only Wikipedia content you should contact the Wikimedia Foundation about is the trademarked Wikipedia/Wikimedia logos, which are not freely usable without permission (members of the media, see [[Foundation:Press room]], others see [[Wikipedia:Contact us]]). If you want to use other Wikipedia materials in your own books/articles/websites or other publications, you can do so, unless it is used under the [[WP:NFC|non-free content provisions]]—but only in compliance with the licensing terms. Please follow the guidelines below:

===Re-use of text===
; Attribution
: To re-distribute text on Wikipedia in any form, provide credit to the authors either by including a) a [[hyperlink]] (where possible) or [[URL]] to the page or pages you are re-using, b) a hyperlink (where possible) or URL to an alternative, stable online copy which is freely accessible, which conforms with the license, and which provides credit to the authors in a manner equivalent to the credit given on this website, or c) a list of all authors. (Any list of authors may be filtered to exclude very small or irrelevant contributions.) This applies to text developed by the Wikipedia community. Text from external sources may attach additional attribution requirements to the work, which should be indicated on an article's face or on its talk page. For example, a page may have a banner or other notation indicating that some or all of its content was originally published somewhere else. Where such notations are visible in the page itself, they should generally be preserved by re-users.
; Copyleft/Share Alike
: If you make modifications or additions to the page you re-use, you must license them under the Creative Commons Attribution-ShareAlike 4.0 International License or later.
; Indicate changes
: If you make modifications or additions, you must indicate in a reasonable fashion that the original work has been modified. If you are re-using the page in a wiki, for example, indicating this in the page history is sufficient.
; Licensing notice
: Each copy or modified version that you distribute must include a licensing notice stating that the work is released under CC BY-SA and either a) a hyperlink or URL to the text of the license or b) a copy of the license. For this purpose, a suitable URL is: https://creativecommons.org/licenses/by-sa/4.0/

'''For further information''', please refer to the [https://creativecommons.org/licenses/by-sa/4.0/legalcode.en legal code of the CC BY-SA License].

====Additional availability of text under the GNU Free Documentation License====

For compatibility reasons, any page which does not incorporate text that is exclusively available under CC BY-SA or a CC BY-SA-compatible license is also available under the terms of the [http://www.gnu.org/copyleft/fdl.html GNU Free Documentation License]. In order to determine whether a page is available under the GFDL, review the page footer, page history, and discussion page for attribution of single-licensed content that is not GFDL-compatible. Since all text published before June 15th, 2009 on Wikipedia was released under the GFDL, you can ensure GFDL compatibility by using the page history to retrieve content published before that date.

===Re-use of non-text media===

Where not otherwise noted, non-text media files are available under various free culture licenses, consistent with the [[wmf:Resolution:Licensing_policy|Wikimedia Foundation Licensing Policy]]. Please view the media description page for details about the license of any specific media file.

=== Non-free materials and special requirements ===

Wikipedia articles may also include quotations, images, or other media under the U.S. Copyright law "fair use" doctrine in accordance with our [[Wikipedia:Non-free content|guidelines for non-free content]]. ''In Wikipedia'', such "fair use" material should be identified as from an external source by an appropriate method (on the image description page, or history page, as appropriate; quotations should be denoted with quotation marks or block quotation in accordance with [[Wikipedia:MOSQUOTE#Quotations|Wikipedia's manual of style]]). This leads to possible restrictions on the use, outside of Wikipedia, of such "fair use" content retrieved from Wikipedia: this "fair use" content does not fall under the CC BY-SA or GFDL license as such, but under the "fair use" (or similar/different) regulations in the country where the media are retrieved.

Prior to June 15, 2009, Wikipedia did permit some text under licenses that were compatible with the GFDL but might require additional terms that were not required for original Wikipedia text (such as including Invariant Sections, Front-Cover Texts, or Back-Cover Texts). However, these materials could only be placed if the original copyright holders did not require that they be carried forward; for that reason, they impose no special burden for reuse.