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Marketing research
Lehmann, Donald R., (1998)
Aaker, David A., (1998)
Qualitative research : good decision making through understanding people cultures and markets
Keegan, Sheila, (2009)
SPECIAL ISSUE ON THE PAST, PRESENT, AND FUTURE OF THE MARKETING DISCIPLINE - Sampling in the Twenty-First Century
Sudman, Seymour, (1999)
Sampling in the twenty-first century
Sudman, Seymour, (2009)
Sudman, Seymour, (2007)