APA

Oldroyd H., . (1964). The natural history of flies. New York: Norton.

Chicago

Oldroyd Harold, . 1964. The natural history of flies. New York: Norton.

Harvard

Oldroyd H., . (1964). The natural history of flies. New York: Norton.

MLA

Oldroyd Harold, . The natural history of flies. New York: Norton. 1964.