Walters, C. G. (1977). Marketing channels. Goodyear.
Chicago Style aipamenaWalters, C. Glenn. Marketing Channels. Santa Monica: Goodyear, 1977.
MLA aipamenaWalters, C. Glenn. Marketing Channels. Goodyear, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.