APA aipamena

Nickels, W. G. (1987). Understanding Business / William G. Nickels. St. Louis.

Chicago Style aipamena

Nickels, William G. Understanding Business / William G. Nickels. St. Louis, 1987.

MLA aipamena

Nickels, William G. Understanding Business / William G. Nickels. St. Louis, 1987.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.