Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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