APA (7th ed.) Citation

Christiansen, T., & Torkington, N. (1998). Perl Cookbook (1st edition.). O'Reilly Media, Inc..

Chicago Style (17th ed.) Citation

Christiansen, Tom, and Nathan Torkington. Perl Cookbook. 1st edition. O'Reilly Media, Inc., 1998.

MLA (9th ed.) Citation

Christiansen, Tom, and Nathan Torkington. Perl Cookbook. 1st edition. O'Reilly Media, Inc., 1998.

Warning: These citations may not always be 100% accurate.