APA (7e ed.) Bronvermelding

Kahn, G., Yerian, C. T., & Stewart, J. R. (1961). Progressive filing (7th ed.). Gregg Pub. Division, McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Kahn, Gilbert, C. Theo Yerian, en Jeffrey Robert Stewart. Progressive Filing. 7th ed. New York: Gregg Pub. Division, McGraw-Hill, 1961.

MLA (8e ed.) Bronvermelding

Kahn, Gilbert, et al. Progressive Filing. 7th ed. Gregg Pub. Division, McGraw-Hill, 1961.