Dyfyniad APA

Wilson, R. C., & Wilson, L. (1939). The woes of the crows. Lorenz.

Dyfyniad Arddull Chicago

Wilson, Roger C., and Lucille Wilson. The Woes of the Crows. New York: Lorenz, 1939.

Dyfyniad MLA

Wilson, Roger C., and Lucille Wilson. The Woes of the Crows. Lorenz, 1939.

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