Citazione Stile APA (7a Edizione)

Penrose, J. M. (2004). Business Communication for Managers (5th.). Cengage Learning.

Citazione stile Chigago Style (17a edizione)

Penrose, John M. Business Communication for Managers. 5th. New Delhi: Cengage Learning, 2004.

Citatione MLA (9a ed.)

Penrose, John M. Business Communication for Managers. 5th. Cengage Learning, 2004.