APA (7th ed.) Citation

Avolio, F. M., & Vixie, P. A. (1995). Sendmail: Theory and practice. Digital Press.

Chicago Style (17th ed.) Citation

Avolio, Frederick M., and Paul A. Vixie. Sendmail: Theory and Practice. Boston: Digital Press, 1995.

MLA (9th ed.) Citation

Avolio, Frederick M., and Paul A. Vixie. Sendmail: Theory and Practice. Digital Press, 1995.