Cita APA (7a ed.)

Unger, B., & Wallis, B. (2015). Penguin post office. PBS Distribution.

Cita Chicago Style (17a ed.)

Unger, Brian, y Ben Wallis. Penguin Post Office. [United States]: PBS Distribution, 2015.

Cita MLA (8a ed.)

Unger, Brian, y Ben Wallis. Penguin Post Office. PBS Distribution, 2015.

Precaución: Estas citas no son 100% exactas.