Dòng Nội dung
1
Communication : writing and speaking / Richard A. Katula, Celest A. Martin, Robert A. Schwegler
Boston : Little, Brown, 1983
xiv, 392 p. : ill. ; 23 cm.
2
The challenge of effective speaking / Rudolph F. Verderber.
Belmont, Calif. : Wadsworth Pub. Co., 1991
xxi, 410 p. : ill. ; 24 cm.