APA-viite (7. p.)
Callingham, M. (2004). Market intelligence: How and why organizations use market research. Kogan Page.
Chicago-viite (17. p.)
Callingham, Martin. Market Intelligence: How and Why Organizations Use Market Research. London ; Sterling, Va.: Kogan Page, 2004.
MLA-viite (9. p.)
Callingham, Martin. Market Intelligence: How and Why Organizations Use Market Research. Kogan Page, 2004.
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