Koegel, Timothy J. The exceptional presenter : a proven formula to open up! and own the room / Timothy J. Koegel. - Austin, TX. : Greenleaf Book Group Press, 2007. - 188 p. : ill. ; 23 cm. ISBN: 9781929774449 Subjects--Topical Terms: Business presentations. LC Class. No.: HF5718.22 / .K64 2007