Walker, O. C. (2006). Marketing strategy (5th ed.). Tata McGraw Hill.
シカゴスタイル引用形Walker, Orville C. Marketing Strategy. 5th ed. New Delhi: Tata McGraw Hill, 2006.
MLA引用形式Walker, Orville C. Marketing Strategy. 5th ed. Tata McGraw Hill, 2006.
警告: この引用は必ずしも正確ではありません.