APA (7th ed.) Citation

Schwartz, A. (2004). SpamAssassin. O'Reilly.

Chicago Style (17th ed.) Citation

Schwartz, Alan. SpamAssassin. Sebastopol, CA: O'Reilly, 2004.

MLA (8th ed.) Citation

Schwartz, Alan. SpamAssassin. O'Reilly, 2004.

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