Cita APA (7th ed.)
Norton, P., & Groh, P. (1998). Guide to visual basic 6. Techmedia.
Cita Chicago (17th ed.)
Norton, Peter, i Peter Groh. Guide to Visual Basic 6. New Delhi: Techmedia, 1998.
Cita MLA (9th ed.)
Norton, Peter, i Peter Groh. Guide to Visual Basic 6. Techmedia, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.