Ryon, W. (1972). Business horizones. General school of business.
シカゴスタイル引用形Ryon, William. Business Horizones. Indiana: General school of business, 1972.
MLA引用形式Ryon, William. Business Horizones. General school of business, 1972.
警告: この引用は必ずしも正確ではありません.