Cita APA (7th ed.)

Schwartz, R. L. (1993). Learning Perl. O'Reilly.

Cita Chicago (17th ed.)

Schwartz, Randal L. Learning Perl. Sebastopol, Calif: O'Reilly, 1993.

Cita MLA (9th ed.)

Schwartz, Randal L. Learning Perl. O'Reilly, 1993.