APA

Comfort J., Utley D., . (2005). Effective Presentations. New York: Oxford University Press.

Chicago

Comfort J, Utley D, . 2005. Effective Presentations. New York: Oxford University Press.

Harvard

Comfort J., Utley D., . (2005). Effective Presentations. New York: Oxford University Press.

MLA

Comfort J, Utley D, . Effective Presentations. New York: Oxford University Press. 2005.