APA

Adams G. P., . (1955). Competitive economic systems. New York: Crowell.

Chicago

Adams George Plimpton, . 1955. Competitive economic systems. New York: Crowell.

Harvard

Adams G. P., . (1955). Competitive economic systems. New York: Crowell.

MLA

Adams George Plimpton, . Competitive economic systems. New York: Crowell. 1955.