Stern, L. W. (1993). Marketing Channels (4th.). Prentice- hall of India.
Chicago Style aipamenaStern, Louis W. Marketing Channels. 4th. delhi: Prentice- hall of India, 1993.
MLA aipamenaStern, Louis W. Marketing Channels. 4th. Prentice- hall of India, 1993.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.