Cita APA (7a ed.)

Helmus, T. M. (1984). The world ant its people: The united states ant its neighbors. Siver, Burdett and Ginn.

Cita Chicago Style (17a ed.)

Helmus, Timothy M. The World Ant Its People: The United States Ant Its Neighbors. New York, Estados Unidos: Siver, Burdett and Ginn, 1984.

Cita MLA (9a ed.)

Helmus, Timothy M. The World Ant Its People: The United States Ant Its Neighbors. Siver, Burdett and Ginn, 1984.