APA

Hall E. R., . (1981). The mammals of North America. New York: John Wiley.

Chicago

Hall Eugene Raymond, . 1981. The mammals of North America. New York: John Wiley.

Harvard

Hall E. R., . (1981). The mammals of North America. New York: John Wiley.

MLA

Hall Eugene Raymond, . The mammals of North America. New York: John Wiley. 1981.