Dyfyniad APA

Hillis, N. D. (1913). The quest of happiness: A study of victory over life's troubles. The Macmillan company; Macmillan & co., ltd..

Dyfyniad Arddull Chicago

Hillis, Newell Dwight. The Quest of Happiness: A Study of Victory over Life's Troubles. New York, London: The Macmillan company; Macmillan & co., ltd., 1913.

Dyfyniad MLA

Hillis, Newell Dwight. The Quest of Happiness: A Study of Victory over Life's Troubles. The Macmillan company; Macmillan & co., ltd., 1913.

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