APA

Clough S. B., Marburg T. F., . (1968). The economic basis of American civilization. New York: Crowell.

Chicago

Clough Shepard Bancroft, Marburg Theodore Francis, . 1968. The economic basis of American civilization. New York: Crowell.

Harvard

Clough S. B., Marburg T. F., . (1968). The economic basis of American civilization. New York: Crowell.

MLA

Clough Shepard Bancroft, Marburg Theodore Francis, . The economic basis of American civilization. New York: Crowell. 1968.