APA (7th ed.) Zitazioa

Nickels, W. G. (1987). Understanding business. Times Mirror/Mosby College Pub..

Chicago Style (17th ed.) Zitazioa

Nickels, William G. Understanding Business. St. Louis: Times Mirror/Mosby College Pub., 1987.

MLA (9th ed.) Zitazioa

Nickels, William G. Understanding Business. Times Mirror/Mosby College Pub., 1987.