APA (7th ed.) Citation

HOLZNER. (1998). Visual basic 6: Black book. Coriolis Group.

Chicago Style (17th ed.) Citation

HOLZNER. Visual Basic 6: Black Book. Arizona: Coriolis Group, 1998.

MLA (9th ed.) Citation

HOLZNER. Visual Basic 6: Black Book. Coriolis Group, 1998.

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