APA (7e ed.) Bronvermelding

Korey, E. L., & Runge, E. J. (1939). Economics: Principles and problems. Longmans, Green and Co..

Chicago (17e ed.) Bronvermelding

Korey, Edward L., en Edmond Joseph Runge. Economics: Principles and Problems. New York: Longmans, Green and Co., 1939.

MLA (8e ed.) Bronvermelding

Korey, Edward L., en Edmond Joseph Runge. Economics: Principles and Problems. Longmans, Green and Co., 1939.