APA aipamena

Osborne, M. P., & Murdocca, S. (1998). Polar bears past bedtime. Random House.

Chicago Style aipamena

Osborne, Mary Pope, and Sal Murdocca. Polar Bears Past Bedtime. New York: Random House, 1998.

MLA aipamena

Osborne, Mary Pope, and Sal Murdocca. Polar Bears Past Bedtime. Random House, 1998.