APA (7th ed.) Citation

Graham, J. W., & Welch, J. W. (1983). Waterloo BASIC : primer and reference manual: A structured programming aproach. WATFAC Publications.

Chicago Style (17th ed.) Citation

Graham, James W., and James W. Welch. Waterloo BASIC : Primer and Reference Manual: A Structured Programming Aproach. Waterloo, Ont: WATFAC Publications, 1983.

MLA (9th ed.) Citation

Graham, James W., and James W. Welch. Waterloo BASIC : Primer and Reference Manual: A Structured Programming Aproach. WATFAC Publications, 1983.