APA aipamena

Holbert, N. B. (1993). Practical Marketing Research. Prentice Hall.

Chicago Style aipamena

Holbert, Neil B. Practical Marketing Research. Prentice Hall, 1993.

MLA aipamena

Holbert, Neil B. Practical Marketing Research. Prentice Hall, 1993.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.