Guffey, M. E. (2010). Essentials of business communication 2nd ed. Cengage Learning.
Stile di citazione ChicagoGuffey, Mary Ellen. Essentials of Business Communication 2nd Ed. Cengage Learning, 2010.
Citazione MLAGuffey, Mary Ellen. Essentials of Business Communication 2nd Ed. Cengage Learning, 2010.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.