Walker, O. C. (2006). Marketing strategy (5th ed.). Tata McGraw Hill.
Chicago Edition CitationWalker, Orville C. Marketing Strategy. 5th ed. New Delhi: Tata McGraw Hill, 2006.
MLA Edition CitationWalker, Orville C. Marketing Strategy. 5th ed. Tata McGraw Hill, 2006.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.