APA (7th ed.) Citation

Wolfe, Erwin, & Scott. (2004). Anti-Spam Tool Kit. McGraw-Hill/Osborne.

Chicago Style (17th ed.) Citation

Wolfe, Erwin, and Scott. Anti-Spam Tool Kit. California: McGraw-Hill/Osborne, 2004.

MLA (8th ed.) Citation

Wolfe, et al. Anti-Spam Tool Kit. McGraw-Hill/Osborne, 2004.