Dyfyniad APA

Esser, R. (2008). Vitality: A psychiatrist's answer to life's problems. Algora Pub..

Dyfyniad Arddull Chicago

Esser, Richard. Vitality: A Psychiatrist's Answer to Life's Problems. New York: Algora Pub., 2008.

Dyfyniad MLA

Esser, Richard. Vitality: A Psychiatrist's Answer to Life's Problems. Algora Pub., 2008.

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