APA

Haverstock N. A., . (1966). OAS : Organization of American States: the challenge of the Americas. New York: Coward-McCann.

Chicago

Haverstock Nathan A, . 1966. OAS : Organization of American States: the challenge of the Americas. New York: Coward-McCann.

Harvard

Haverstock N. A., . (1966). OAS : Organization of American States: the challenge of the Americas. New York: Coward-McCann.

MLA

Haverstock Nathan A, . OAS : Organization of American States: the challenge of the Americas. New York: Coward-McCann. 1966.