APA-viite (7. p.)
Walle, A. H. (2001). Qualitative research in intelligence and marketing: The new strategic convergence. Quorum Books.
Chicago-viite (17. p.)
Walle, Alf H. Qualitative Research in Intelligence and Marketing: The New Strategic Convergence. Westport, Conn.: Quorum Books, 2001.
MLA-viite (9. p.)
Walle, Alf H. Qualitative Research in Intelligence and Marketing: The New Strategic Convergence. Quorum Books, 2001.
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