Cita APA (7a ed.)

Harris, M. (1997). Teach yourself Visual Basic 5 for applications in 21 days (3a.ed.). Sons.

Cita Chicago Style (17a ed.)

Harris, Mathew. Teach Yourself Visual Basic 5 for Applications in 21 Days. 3a.ed. Indiana: Sons, 1997.

Cita MLA (8a ed.)

Harris, Mathew. Teach Yourself Visual Basic 5 for Applications in 21 Days. 3a.ed. Sons, 1997.