APA

Langley L. D., . (1968). The Cuban policy of the United States: a brief history. New York: Wiley.

Chicago

Langley Lester D, . 1968. The Cuban policy of the United States: a brief history. New York: Wiley.

Harvard

Langley L. D., . (1968). The Cuban policy of the United States: a brief history. New York: Wiley.

MLA

Langley Lester D, . The Cuban policy of the United States: a brief history. New York: Wiley. 1968.