APA (7th ed.) Citation

Chamberlain, D., Cross, D., & Wardley, A. (2003). Perl template toolkit. Safari Tech Books Online.

Chicago Style (17th ed.) Citation

Chamberlain, Darren, David Cross, and Andy Wardley. Perl Template Toolkit. Boston, Mass.: Safari Tech Books Online, 2003.

MLA (8th ed.) Citation

Chamberlain, Darren, et al. Perl Template Toolkit. Safari Tech Books Online, 2003.

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