Cita APA

O'Brien, L., & Liz O'Brien. Speak well. New York, NY: McGraw-Hill Higher Education.

Citación estilo Chicago

O'Brien, Liz, y Liz O'Brien. Speak Well. New York, NY: McGraw-Hill Higher Education.

Cita MLA

O'Brien, Liz, y Liz O'Brien. Speak Well. New York, NY: McGraw-Hill Higher Education.