Morris, S., & Willcocks, G. (2000). Great business letters in a week. Hodder & Stoughton.
Chicago Style (17. basım) AtıfMorris, Steve, ve Graham Willcocks. Great Business Letters in a Week. London: Hodder & Stoughton, 2000.
MLA (8th ed.) AtıfMorris, Steve, ve Graham Willcocks. Great Business Letters in a Week. Hodder & Stoughton, 2000.
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