Gaya APA

KOEGEL, T, J. (2007). The Exceptional Presenter : A Proven Formula to Open Up! and Own the Room (First Published). Austin, Texas: Greenleaf Book Group Press.

Gaya MLA

KOEGEL, Timothy, J.. "The Exceptional Presenter : A Proven Formula to Open Up! and Own the Room". First Published Austin, Texas: Greenleaf Book Group Press, 2007. Text.