Cita APA

Perry, G. (1998). Sams teach yourself: Visual basic 6 in 21 days. Techmedia.

Citación estilo Chicago

Perry, Greg. Sams Teach Yourself: Visual Basic 6 in 21 Days. New Delhi: Techmedia, 1998.

Cita MLA

Perry, Greg. Sams Teach Yourself: Visual Basic 6 in 21 Days. Techmedia, 1998.