Dyfyniad APA

WEISS DONALD H. (1987). HOW TO MAKE AN EFFECTIVE SPEECH OR PRESENTATION. AMACOM.

Dyfyniad Arddull Chicago

WEISS DONALD H. HOW TO MAKE AN EFFECTIVE SPEECH OR PRESENTATION. NEW YORK: AMACOM, 1987.

Dyfyniad MLA

WEISS DONALD H. HOW TO MAKE AN EFFECTIVE SPEECH OR PRESENTATION. AMACOM, 1987.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.