Cita APA (7a ed.)

(2003). Learning Perl objects, references, and modules / Randal L. Schwartz with Tom Phoenix.

Cita Chicago Style (17a ed.)

Learning Perl Objects, References, and Modules / Randal L. Schwartz with Tom Phoenix. 2003.

Cita MLA (9a ed.)

Learning Perl Objects, References, and Modules / Randal L. Schwartz with Tom Phoenix. 2003.