APA (7. basım) Alıntı

Nelson, J. How to write impressive business letters. Goodwill Pub..

Chicago Style (17. basım) Atıf

Nelson, Jens. How to Write Impressive Business Letters. New Delhi: Goodwill Pub..

MLA (8th ed.) Atıf

Nelson, Jens. How to Write Impressive Business Letters. Goodwill Pub..