Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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