Dyfyniad APA

Peale, N. V. (2003). The power of positive thinking. New York: Fireside/Simon & Schuster.

Dyfyniad Arddull Chicago

Peale, Norman Vincent. The Power of Positive Thinking. New York: Fireside/Simon & Schuster, 2003.

Dyfyniad MLA

Peale, Norman Vincent. The Power of Positive Thinking. New York: Fireside/Simon & Schuster, 2003.

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