APA (7th ed.) Citation

Siever, E., Spainhour, S., & Patwardhan, N. (1999). Perl in a nutshell: A desktop quick reference. O'Reilly.

Chicago Style (17th ed.) Citation

Siever, Ellen, Stephen Spainhour, and Nate Patwardhan. Perl in a Nutshell: A Desktop Quick Reference. Beijing ; Sebastopol, Calif.: O'Reilly, 1999.

MLA (9th ed.) Citation

Siever, Ellen, et al. Perl in a Nutshell: A Desktop Quick Reference. O'Reilly, 1999.