Cita APA (7a ed.)

Schwartz, R. L., Foy, B. D., & Phoenix, T. (2017). Learning Perl: Making easy things easy and hard things possible (Seventh edition.). O'Reilly.

Cita Chicago Style (17a ed.)

Schwartz, Randal L., Brian D. Foy, y Tom Phoenix. Learning Perl: Making Easy Things Easy and Hard Things Possible. Seventh edition. Beijing, [China]: O'Reilly, 2017.

Cita MLA (9a ed.)

Schwartz, Randal L., et al. Learning Perl: Making Easy Things Easy and Hard Things Possible. Seventh edition. O'Reilly, 2017.