APA

Chapman R. F., . (1971). The insects. New York: Elsevier.

Chicago

Chapman Reginald Frederick, . 1971. The insects. New York: Elsevier.

Harvard

Chapman R. F., . (1971). The insects. New York: Elsevier.

MLA

Chapman Reginald Frederick, . The insects. New York: Elsevier. 1971.