Cita APA (7th ed.)

Dent, K. D. (2004). Postfix: The Definitive Guide. O`Reilly Associates.

Cita Chicago (17th ed.)

Dent, Kyle D. Postfix: The Definitive Guide. Sebastopol: O`Reilly Associates, 2004.

Cita MLA (8th ed.)

Dent, Kyle D. Postfix: The Definitive Guide. O`Reilly Associates, 2004.