Dyfyniad APA

Covey, S. R. (2000). Living the 7 habits: The courage to change (1st Fireside edition.). Simon & Schuster.

Dyfyniad Arddull Chicago

Covey, Stephen R. Living the 7 Habits: The Courage to Change. 1st Fireside edition. New York: Simon & Schuster, 2000.

Dyfyniad MLA

Covey, Stephen R. Living the 7 Habits: The Courage to Change. 1st Fireside edition. Simon & Schuster, 2000.

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