Engleberg, Isa N. The principles of public presentation / Isa N. Engleberg. - New York, NY : HarperCollins, c1994. - xxv, 358 p. : ill. (some col.) ; 24 cm. Includes index. ISBN: 0065007387 LCCN: 93030818 Subjects--Topical Terms: Public speaking. LC Class. No.: PN4121 / .E54 1994 Dewey Class. No.: 808.5/1