Cita APA (7th ed.)

Coyle, D. C. (1969). The United Nations and how it works. Columbia University.

Cita Chicago (17th ed.)

Coyle, David Cushman. The United Nations and How It Works. Nueva York: Columbia University, 1969.

Cita MLA (9th ed.)

Coyle, David Cushman. The United Nations and How It Works. Columbia University, 1969.