APA (7th ed.) Citation

Costales, B., & Allman, E. (2003). Sendmail (3rd ed.). O' Reilly.

Chicago Style (17th ed.) Citation

Costales, Bryan, and Eric Allman. Sendmail. 3rd ed. Beijing: O' Reilly, 2003.

MLA (8th ed.) Citation

Costales, Bryan, and Eric Allman. Sendmail. 3rd ed. O' Reilly, 2003.

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