Dòng Nội dung
1
Public speaking / Michael Osborn, Suzanne Osborn.
Boston : Houghton Mifflin, 2006
xxii, 564 p. : ill. (chiefly col.); 28 cm.
2
Public speaking / Michael Osborn, Suzanne Osborn.
Boston : Houghton Mifflin, 1991
xxvi, 488 p. ; 28 cm.