Cita APA (7a ed.)

Safari Tech Books Online, Schwartz, R. L. A., Christiansen, T. C., & Olson, E. W. C. (1997). Learning Perl on Win32 systems (First edition.). O'Reilly.

Cita Chicago Style (17a ed.)

Safari Tech Books Online, Randal L Author Schwartz, Tom Contributor Christiansen, y Erik W. Contributor Olson. Learning Perl on Win32 Systems. First edition. [Place of publication not identified]: O'Reilly, 1997.

Cita MLA (9a ed.)

Safari Tech Books Online, et al. Learning Perl on Win32 Systems. First edition. O'Reilly, 1997.