Cita APA (7a ed.)

Armbruster, M. E. (1960). The Presidents of the United States: A new appraisal. Horizon.

Cita Chicago Style (17a ed.)

Armbruster, Maxim Ethan. The Presidents of the United States: A New Appraisal. New York: Horizon, 1960.

Cita MLA (9a ed.)

Armbruster, Maxim Ethan. The Presidents of the United States: A New Appraisal. Horizon, 1960.