APA

Osborn M. . O., .Public Speaking. New York:Houghton Mifflin Company, 2006: .

Chicago

Osborn Michael Osborn,Suzanne, .Public Speaking. New York:Houghton Mifflin Company, 2006: .

Harvard

Osborn M. . O., .Public Speaking. New York:Houghton Mifflin Company, 2006: .

MLA

Osborn Michael Osborn,Suzanne, .New York:Houghton Mifflin Company, 2006: . .