Cita APA (7th ed.)

Berenstain, S., & Berenstain, J. (2012). Nothing ever happens at the South Pole. Harper.

Cita Chicago (17th ed.)

Berenstain, Stan, i Jan Berenstain. Nothing Ever Happens at the South Pole. New York, NY: Harper, 2012.

Cita MLA (8th ed.)

Berenstain, Stan, i Jan Berenstain. Nothing Ever Happens at the South Pole. Harper, 2012.