Cita APA (7a ed.)

Safari Tech Books Online, Christiansen, T. A., & Torkington, N. C. (1998). Perl cookbook (First edition.). O'Reilly.

Cita Chicago Style (17a ed.)

Safari Tech Books Online, Tom Author Christiansen, y Nathan Contributor Torkington. Perl Cookbook. First edition. [Place of publication not identified]: O'Reilly, 1998.

Cita MLA (9a ed.)

Safari Tech Books Online, et al. Perl Cookbook. First edition. O'Reilly, 1998.