Gaya APA

Marketing research / David A. Aaker ; V. Kumar ; George S. Day. (1979). New York, NY: John Wiley & Sons, c.

Gaya MLA

Marketing research / David A. Aaker ; V. Kumar ; George S. Day. 5th ed.. New York, NY: John Wiley & Sons, c, 1979. Buku Wajib.