APA Edition Citation

Christiansen, T., Foy, B. D., & Wall, L. (2012). Programming Perl (4th ed.). O'Reilly.

Chicago Edition Citation

Christiansen, Tom, Brian D. Foy, and Larry Wall. Programming Perl. 4th ed. Beijing ; Sebastopol: O'Reilly, 2012.

MLA Edition Citation

Christiansen, Tom, et al. Programming Perl. 4th ed. O'Reilly, 2012.