Browne, T. (1977). The animal kingdom. Marshall Cavendish Books Limited.
Cita Chicago (17th ed.)Browne, Thomas. The Animal Kingdom. London, England, United Kingdom: Marshall Cavendish Books Limited, 1977.
Cita MLA (9th ed.)Browne, Thomas. The Animal Kingdom. Marshall Cavendish Books Limited, 1977.
Atenció: Aquestes cites poden no estar 100% correctes.