Dugger, J. (1992). Business Letters for Busy People. Kuala Lumpur: Golden books centre.
シカゴスタイル引用形Dugger, Jim. Business Letters for Busy People. Kuala Lumpur: Golden books centre, 1992.
MLA引用形式Dugger, Jim. Business Letters for Busy People. Kuala Lumpur: Golden books centre, 1992.
警告: この引用は必ずしも正確ではありません.