APA aipamena

Tull, D. (1993). Marketing Research. Prentice Hall of India.

Chicago Style aipamena

Tull, Donald. Marketing Research. New Delhi: Prentice Hall of India, 1993.

MLA aipamena

Tull, Donald. Marketing Research. Prentice Hall of India, 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.