Elfenbein, J. (1973). Modern business: Buisness letters and communications. Robert Hale.
シカゴスタイル引用形Elfenbein, Julien. Modern Business: Buisness Letters and Communications. London: Robert Hale, 1973.
MLA引用形式Elfenbein, Julien. Modern Business: Buisness Letters and Communications. Robert Hale, 1973.
警告: この引用は必ずしも正確ではありません.