Busch, Paul S
Marketing : strategic foundations
Richard D.Irwin, 1975
Buku Teks SO
Baker, Michael J.
Research for marketing
Macmillan, 1991
Buku Teks SO
Kress, George
Marketing research
Prentice-Hall, 1988
Buku Teks SO
Parasuraman, A.
Marketing research
Addison-Wesley, 1991
Buku Teks SO
Aaker, David A.
Marketing Research
John Wiley & Sons, 1995
Buku Teks