Παραπομπή APA

Dugger, J. (2003). Business letters for busy people (3rd ed.). Jaico.

Παραπομπή Chicago Style

Dugger, Jim. Business Letters for Busy People. 3rd ed. Mumbai: Jaico, 2003.

Παραπομπή MLA

Dugger, Jim. Business Letters for Busy People. 3rd ed. Jaico, 2003.