Citazione Stile APA (7a Edizione)
Guffey, M. E., & Loewy, D. (2010). Essentials of business communication (8th ed.). South-Western Cengage Learning.
Citazione stile Chigago Style (17a edizione)
Guffey, Mary Ellen, e Dana Loewy. Essentials of Business Communication. 8th ed. Mason, OH: South-Western Cengage Learning, 2010.
Citatione MLA (9a ed.)
Guffey, Mary Ellen, e Dana Loewy. Essentials of Business Communication. 8th ed. South-Western Cengage Learning, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.