Dyfyniad APA

NOVA VISTA PUBLISHING. (2003). WIN -WIN SELLING. NOVA VISTA PUBLISHING.

Dyfyniad Arddull Chicago

NOVA VISTA PUBLISHING. WIN -WIN SELLING. NORTH AMERICA: NOVA VISTA PUBLISHING, 2003.

Dyfyniad MLA

NOVA VISTA PUBLISHING. WIN -WIN SELLING. NOVA VISTA PUBLISHING, 2003.

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