APA

Coyle D. C., . (19611960). The United Nations and how it works. New York: Columbia University Press.

Chicago

Coyle David Cushman, . 19611960. The United Nations and how it works. New York: Columbia University Press.

Harvard

Coyle D. C., . (19611960). The United Nations and how it works. New York: Columbia University Press.

MLA

Coyle David Cushman, . The United Nations and how it works. New York: Columbia University Press. 19611960.