APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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