APA (7th ed.) Citation

Perry, P. J. (1994). Teach yourself more Visual Basic 3 in 21 days. Sams.

Chicago Style (17th ed.) Citation

Perry, Paul J. Teach Yourself More Visual Basic 3 in 21 Days. Indianapolis, IN: Sams, 1994.

MLA (9th ed.) Citation

Perry, Paul J. Teach Yourself More Visual Basic 3 in 21 Days. Sams, 1994.

Warning: These citations may not always be 100% accurate.