Doman, Don
Look before you leap: market research made easy
Gramedia Pustaka Utama, 1997
 Buku Teks
Doman, Don
Look before you leap: market research made easy
Gramedia Pustaka Utama, 1997
 Buku Teks
Doman, Don
Look before you leap: market research made easy
Gramedia Pustaka Utama, 1997
 Buku Teks
Honomichl, Jack J.
Riset Pemasaran : Honomichl on marketing research = Marketing research
Elex Media Komputindo , 1991
 Buku Teks
Baker, Michael J.
Research for marketing
Macmillan, 1991
 Buku Teks