APA (7th ed.) Zitazioa
ebrary, Inc, Hamersveld, M. v., & Bont, C. d. (2007). Market research handbook (5th ed.). John Wiley & Sons.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, Mario van Hamersveld, eta Cees de Bont. Market Research Handbook. 5th ed. Chichester, West Sussex, England ; Hoboken, N.J..: John Wiley & Sons, 2007.
MLA (9th ed.) Zitazioa
ebrary, Inc, et al. Market Research Handbook. 5th ed. John Wiley & Sons, 2007.
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