Helms, H. L. (1981). Computer language reference guide: With keyword dictionary. Howard W. Sams.
Chicago Style (17th ed.) CitationHelms, Harry L. Computer Language Reference Guide: With Keyword Dictionary. Indianapolis: Howard W. Sams, 1981.
MLA (9th ed.) CitationHelms, Harry L. Computer Language Reference Guide: With Keyword Dictionary. Howard W. Sams, 1981.
Warning: These citations may not always be 100% accurate.