Cita APA (7a ed.)

Essig, E. O. (1942). College entomology. The Macmillan company.

Cita Chicago Style (17a ed.)

Essig, E. O. College Entomology. New York: The Macmillan company, 1942.

Cita MLA (9a ed.)

Essig, E. O. College Entomology. The Macmillan company, 1942.