Παραπομπή σε μορφή APA (7η εκδ.)

Guffey, M. E. (1995). Essentials of business communication (3rd ed.). South-Western College.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Guffey, Mary Ellen. Essentials of Business Communication. 3rd ed. Cincinnati, Ohio: South-Western College, 1995.

Παραπομπή σε μορφή MLA (9th εκδ.)

Guffey, Mary Ellen. Essentials of Business Communication. 3rd ed. South-Western College, 1995.