Cita APA (7th ed.)

DeBach, P. (1991). Biological control by natural enemies. C.U.Pr..

Cita Chicago (17th ed.)

DeBach, Paul. Biological Control by Natural Enemies. Cambridge: C.U.Pr., 1991.

Cita MLA (9th ed.)

DeBach, Paul. Biological Control by Natural Enemies. C.U.Pr., 1991.