APA (7th ed.) Citation

Costales, B., Jansen, G., Aßmann, C., & Shapiro, G. N. (2007). Sendmail: [build and administer sendmail] (4. ed., rev. & updated.). O'Reilly.

Chicago Style (17th ed.) Citation

Costales, Bryan, George Jansen, Claus Aßmann, and Gregory Neil Shapiro. Sendmail: [build and Administer Sendmail]. 4. ed., rev. & updated. Sebastopol, CA: O'Reilly, 2007.

MLA (9th ed.) Citation

Costales, Bryan, et al. Sendmail: [build and Administer Sendmail]. 4. ed., rev. & updated. O'Reilly, 2007.