APA (7e ed.) Bronvermelding

Mortenson, W. P., Krider, D. T., & Sampson, R. J. (1969). Understanding our economy: Analysis, issues, principles (Teacher's ed.). Houghton Mifflin.

Chicago (17e ed.) Bronvermelding

Mortenson, W. P., Donald T. Krider, en Roy J. Sampson. Understanding Our Economy: Analysis, Issues, Principles. Teacher's ed. New York: Houghton Mifflin, 1969.

MLA (8e ed.) Bronvermelding

Mortenson, W. P., et al. Understanding Our Economy: Analysis, Issues, Principles. Teacher's ed. Houghton Mifflin, 1969.