Cita APA (7th ed.)

Schwartz, R. L., & Christiansen, T. (1997). Learning Perl (2nd ed.). O'Reilly.

Cita Chicago (17th ed.)

Schwartz, Randal L., i Tom Christiansen. Learning Perl. 2nd ed. Beijing: O'Reilly, 1997.

Cita MLA (9th ed.)

Schwartz, Randal L., i Tom Christiansen. Learning Perl. 2nd ed. O'Reilly, 1997.