Cita APA (7a ed.)

Essig, E. O. (1931). A history of entomology. The Macmillan Company.

Cita Chicago Style (17a ed.)

Essig, E O. A History of Entomology. New York: The Macmillan Company, 1931.

Cita MLA (8a ed.)

Essig, E O. A History of Entomology. The Macmillan Company, 1931.