Dyfyniad APA

(2005). Leadership excellence. Provo, Utah: Executive Excellence Pub..

Dyfyniad Arddull Chicago

Leadership Excellence. Provo, Utah: Executive Excellence Pub., 2005.

Dyfyniad MLA

Leadership Excellence. Provo, Utah: Executive Excellence Pub., 2005.

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