Cita APA (7th ed.)

Comfort J. Jeremy & Utley D. Derek. (2005). Effective Presentations: Oxford Business English Skills. New York, Oxford University Press, 2005.

Cita Chicago (17th ed.)

Comfort J. Jeremy i Utley D. Derek. Effective Presentations: Oxford Business English Skills. New York, Oxford University Press, 2005, 2005.

Cita MLA (9th ed.)

Comfort J. Jeremy i Utley D. Derek. Effective Presentations: Oxford Business English Skills. New York, Oxford University Press, 2005, 2005.