Ernest, J. W. (1973). Salesmanship fundamentals. business book limited.
シカゴスタイル引用形Ernest, John W. Salesmanship Fundamentals. London: business book limited, 1973.
MLA引用形式Ernest, John W. Salesmanship Fundamentals. business book limited, 1973.
警告: この引用は必ずしも正確ではありません.