APA-viite (7. p.)
Walker, O. C. (2003). Marketing strategy: A decision-focused approach (4th ed.). McGraw-Hill/Irwin.
Chicago-viite (17. p.)
Walker, Orville C. Marketing Strategy: A Decision-focused Approach. 4th ed. Boston: McGraw-Hill/Irwin, 2003.
MLA-viite (9. p.)
Walker, Orville C. Marketing Strategy: A Decision-focused Approach. 4th ed. McGraw-Hill/Irwin, 2003.
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