Cita APA (7a ed.)

Sweetman, H. L. (1936). The biological control of insects. Comstock Publ. Co..

Cita Chicago Style (17a ed.)

Sweetman, Harvey L. The Biological Control of Insects. New York: Comstock Publ. Co., 1936.

Cita MLA (9a ed.)

Sweetman, Harvey L. The Biological Control of Insects. Comstock Publ. Co., 1936.