Editing Combination (section)

==References==
* {{citation | first1 = Arthur T. | last1 = Benjamin | author1-link = Arthur T. Benjamin | first2 = Jennifer J. | last2 = Quinn | author2-link = Jennifer Quinn | title = Proofs that Really Count: The Art of Combinatorial Proof | title-link = Proofs That Really Count | year = 2003 | series = The Dolciani Mathematical Expositions 27 | publisher = The Mathematical Association of America | isbn = 978-0-88385-333-7 }}
* {{citation|first=Richard A.|last=Brualdi|author-link=Richard A. Brualdi|year=2010|title=Introductory Combinatorics|edition=5th|publisher=Pearson Prentice Hall|isbn=978-0-13-602040-0}}
* [[Erwin Kreyszig]], ''Advanced Engineering Mathematics'', John Wiley & Sons, INC, 1999.
* {{citation|first=David R.|last= Mazur|title=Combinatorics: A Guided Tour|year= 2010|publisher=Mathematical Association of America|isbn=978-0-88385-762-5}}
* {{citation|first= Herbert John|last=Ryser|author-link=H. J. Ryser|year=1963|title=Combinatorial Mathematics|publisher=Mathematical Association of America|series=The Carus Mathematical Monographs 14}}
* {{citation| first=James|last=Uspensky|author-link=J. V. Uspensky|title=Introduction to Mathematical Probability|year=1937|publisher=McGraw-Hill|url=https://archive.org/details/in.ernet.dli.2015.263184/page/n25/mode/2up}}