Ireland,Norman J. (1987). Product differentiation and non-price competition. Basil Blackwell.
シカゴスタイル引用形Ireland,Norman J. Product Differentiation and Non-price Competition. New York: Basil Blackwell, 1987.
MLA引用形式Ireland,Norman J. Product Differentiation and Non-price Competition. Basil Blackwell, 1987.
警告: この引用は必ずしも正確ではありません.