APA (7th ed.) Citation

Vacca, J. R., & Ellingen, D. C. (1996). Internet security secrets. IDG Books Worldwide, Inc.

Chicago Style (17th ed.) Citation

Vacca, John R., and Dana C. Ellingen. Internet Security Secrets. Foster City: IDG Books Worldwide, Inc, 1996.

MLA (8th ed.) Citation

Vacca, John R., and Dana C. Ellingen. Internet Security Secrets. IDG Books Worldwide, Inc, 1996.