Cita APA (7a ed.)

Bogardus, E. S. (1964). Principles of cooperation (3rd ed.). Cooperative League of the USA.

Cita Chicago Style (17a ed.)

Bogardus, Emory Stephen. Principles of Cooperation. 3rd ed. Chicago: Cooperative League of the USA, 1964.

Cita MLA (9a ed.)

Bogardus, Emory Stephen. Principles of Cooperation. 3rd ed. Cooperative League of the USA, 1964.