Cita APA

Howe, H. F., & Westley , L. C. (1988). Ecological relationships of plants and animals. OUP.

Citación estilo Chicago

Howe, Henry F., y Lynn C. Westley. Ecological Relationships of Plants and Animals. New York: OUP, 1988.

Cita MLA

Howe, Henry F., y Lynn C. Westley. Ecological Relationships of Plants and Animals. OUP, 1988.