Cita APA (7th ed.)

Ettinger, B., & Perfetto, E. (2008). Business English: Writing in the workplace (4th ed.). Pearson Prentice Hall.

Cita Chicago (17th ed.)

Ettinger, Blanche, i Edda Perfetto. Business English: Writing in the Workplace. 4th ed. Upper Saddle River, N.J: Pearson Prentice Hall, 2008.

Cita MLA (9th ed.)

Ettinger, Blanche, i Edda Perfetto. Business English: Writing in the Workplace. 4th ed. Pearson Prentice Hall, 2008.