APA (7th ed.) Citation

Holzner, S. (1998). Visual Basic 6 black book. The Coriolis Group.

Chicago Style (17th ed.) Citation

Holzner, Steven. Visual Basic 6 Black Book. Arizona: The Coriolis Group, 1998.

MLA (9th ed.) Citation

Holzner, Steven. Visual Basic 6 Black Book. The Coriolis Group, 1998.

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