APA

Howe H. F., Westley L. C., . (1988). Ecological Relationships of plants and animals. New York: Oxford University.

Chicago

Howe Henry F, Westley Lynn C, . 1988. Ecological Relationships of plants and animals. New York: Oxford University.

Harvard

Howe H. F., Westley L. C., . (1988). Ecological Relationships of plants and animals. New York: Oxford University.

MLA

Howe Henry F, Westley Lynn C, . Ecological Relationships of plants and animals. New York: Oxford University. 1988.