Dyfyniad APA

Engle, T. L. (1958). Psychology: Its principles and application. Harcourt, Brace.

Dyfyniad Arddull Chicago

Engle, T. L. Psychology: Its Principles and Application. N. Y: Harcourt, Brace, 1958.

Dyfyniad MLA

Engle, T. L. Psychology: Its Principles and Application. Harcourt, Brace, 1958.

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