APA (7th ed.) Zitazioa
Whitcomb Alan. (1980). Comprehensive commerce (ed.). Nelson House.
Chicago Style (17th ed.) Zitazioa
Whitcomb Alan. Comprehensive Commerce. ed. Hong Kong: Nelson House, 1980.
MLA (9th ed.) Zitazioa
Whitcomb Alan. Comprehensive Commerce. ed. Nelson House, 1980.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.