Estolas, Josefina V., author
Fundamentas of research
Miranda, 1973
 Buku Teks
Riley, Matilda White
Sociological research
Harcourt, Brace and world, 1963
 Buku Teks
Malhotra, Naresh K.
Makerting Research
Prentice Hall International, 1996
 Buku Teks
Silvia Ulfa, author
Marketing research
PAU-EK-UI, 1991
 Buku Teks
Aaker, David A., author
Marketing Research
John Wiley & Sons, 1995
 Buku Teks
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