Dyfyniad APA

Robinson, G. d. B. (1959). The foundations of geometry (4th edition.). University of Toronto Press.

Dyfyniad Arddull Chicago

Robinson, Gilbert de Beauregard. The Foundations of Geometry. 4th edition. Toronto: University of Toronto Press, 1959.

Dyfyniad MLA

Robinson, Gilbert de Beauregard. The Foundations of Geometry. 4th edition. University of Toronto Press, 1959.

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