APA (7th ed.) Zitazioa

Waud, R. N. (1983). Economics (2nd ed.). Harper and Row.

Chicago Style (17th ed.) Zitazioa

Waud, Roger N. Economics. 2nd ed. New York: Harper and Row, 1983.

MLA (9th ed.) Zitazioa

Waud, Roger N. Economics. 2nd ed. Harper and Row, 1983.