Cita APA (7a ed.)

Burton, M., & Burton, R. (2000). The little brown: Encyclopedia of animals. Little, Brown and Company.

Cita Chicago Style (17a ed.)

Burton, Maurice, y Robert Burton. The Little Brown: Encyclopedia of Animals. London: Little, Brown and Company, 2000.

Cita MLA (8a ed.)

Burton, Maurice, y Robert Burton. The Little Brown: Encyclopedia of Animals. Little, Brown and Company, 2000.