Goldsborough, R. (1982). Advertising age. Crain Communication.
Chicago Style aipamenaGoldsborough, Robert. Advertising Age. Chicage: Crain Communication, 1982.
MLA aipamenaGoldsborough, Robert. Advertising Age. Crain Communication, 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.