APA

Lundberg G. A., . (1939). Foundations of sociology. New York: Macmillan.

Chicago

Lundberg George Andrew, . 1939. Foundations of sociology. New York: Macmillan.

Harvard

Lundberg G. A., . (1939). Foundations of sociology. New York: Macmillan.

MLA

Lundberg George Andrew, . Foundations of sociology. New York: Macmillan. 1939.