APA引文

Vixie, P. A. (2002). Sendmail: Theory and practice. Boston: Digital Press.

Trích dẫn kiểu Chicago

Vixie, Paul A. Sendmail: Theory and Practice. Boston: Digital Press, 2002.

MLA引文

Vixie, Paul A. Sendmail: Theory and Practice. Boston: Digital Press, 2002.

警告：這些引文格式不一定是100％准確.