Editing PL/I (section)

===Textbooks===
* {{cite book
 |last1=Neuhold
 |first1=E.J.
 |last2=Lawson
 |first2=H.W.
 |year=1971
 |title=The PL/I Machine: An Introduction to Programming
 |publisher=Addison-wesley
 |isbn=978-0-2010-5275-6}}
* {{cite book
 |last1=Barnes
 |first1=R.A.
 |year=1979
 |title=PL/I for Programmers
 |publisher=North-Holland
 }}
* {{cite book
 |last1=Hughes
 |first1=Joan K.
 |year=1973
 |title=PL/I Programming
 |edition=1st
 |publisher=Wiley
 |isbn=0-471-42032-8
 }}
* {{cite book
 |last1=Hughes
 |first1=Joan K.
 |year=1986
 |title=PL/I Structured Programming
 |edition=3rd
 |publisher=Wiley
 |isbn=0-471-83746-6
 }}
* {{cite book
 |last1=Groner
 |first1=G.F.
 |year=1971
 |title=PL/I Programming in Technological Applications
 |publisher=Books on Demand, Ann Arbor, MI
 }}
* {{cite book
 |last1=Anderson
 |first1=M.E.
 |year=1973
 |title=PL/I for Programmers
 |publisher=Prentice-Hall
 }}
* {{cite book
 |last1=Stoutemyer
 |first1=D.R.
 |year=1971
 |title=PL/I Programming for Engineering & Science
 |publisher=Prentice-Hall
 }}
* {{cite book
 |last1=Ziegler
 |first1=R.R. & C.
 |year=1986
 |title=PL/I: Structured Programming and Problem Solving
 |edition=1st
 |publisher=West
 |isbn=978-0-314-93915-9}}
* {{cite book
 |last1=Sturm
 |first1=E.
 |year=2009
 |title=The New PL/I ... for PC, Workstation and Mainframe
 |publisher=Vieweg-Teubner, Wiesbaden, Germany
 |isbn=978-3-8348-0726-7}}
* {{cite book
 |last1=Vowels
 |first1=R.A.
 |year=1997
 |title=Introduction to PL/I, Algorithms, and Structured Programming |edition=3rd
 |isbn=978-0-9596384-9-3
 |publisher=R.A. Vowels
}}
* {{cite book
 |last1=Abrahams
 |first1=Paul
 |year=1979
 |title=The PL/I Programming Language
 |publisher=Courant Mathematics and Computing Laboratory, New York University
 |url=http://www.iron-spring.com/abrahams.pdf
}}