APA (7e ed.) Bronvermelding

Waud, R. N., & Norton, H. S. (1983). Economics (2nd ed.). Harper & Row.

Chicago (17e ed.) Bronvermelding

Waud, Roger N., en Hugh Stanton Norton. Economics. 2nd ed. New York: Harper & Row, 1983.

MLA (9e ed.) Bronvermelding

Waud, Roger N., en Hugh Stanton Norton. Economics. 2nd ed. Harper & Row, 1983.