Cassels, J. (1960). How to sell successfully by direct mail. Business publications.
シカゴスタイル引用形Cassels, J.W.W. How to Sell Successfully by Direct Mail. London: Business publications, 1960.
MLA引用形式Cassels, J.W.W. How to Sell Successfully by Direct Mail. Business publications, 1960.
警告: この引用は必ずしも正確ではありません.