Cita APA (7th ed.)
Burton, M. (1969). The international wildlife encyclopedia. Marshall cavendish.
Cita Chicago (17th ed.)
Burton, Maurice. The International Wildlife Encyclopedia. New York: Marshall cavendish, 1969.
Cita MLA (9th ed.)
Burton, Maurice. The International Wildlife Encyclopedia. Marshall cavendish, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.