APA

Gronbeck B. E., Mckerrow R. E., . (2007). Principles and types of public speaking. : Pearson.

Chicago

Gronbeck Bruce E, Mckerrow Raymie E, . 2007. Principles and types of public speaking. : Pearson.

Harvard

Gronbeck B. E., Mckerrow R. E., . (2007). Principles and types of public speaking. : Pearson.

MLA

Gronbeck Bruce E, Mckerrow Raymie E, . Principles and types of public speaking. : Pearson. 2007.