Dyfyniad APA

Alberts, J. K. (2003). Thinkwell's public speaking. Thinkwell Corporation.

Dyfyniad Arddull Chicago

Alberts, Jess K. Thinkwell's Public Speaking. Thinkwell Corporation, 2003.

Dyfyniad MLA

Alberts, Jess K. Thinkwell's Public Speaking. Thinkwell Corporation, 2003.

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