Dugger, J. (1992). Business Letters for Busy People. Kuala Lumpur: Golden books centre.
Trích dẫn kiểu ChicagoDugger, Jim. Business Letters for Busy People. Kuala Lumpur: Golden books centre, 1992.
ציטוט MLADugger, Jim. Business Letters for Busy People. Kuala Lumpur: Golden books centre, 1992.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.