Dyfyniad APA

Levi, H. (1960). Foundations of geometry and trignometry. Prentice Hall.

Dyfyniad Arddull Chicago

Levi, Howard. Foundations of Geometry and Trignometry. Englewood Cliffs: Prentice Hall, 1960.

Dyfyniad MLA

Levi, Howard. Foundations of Geometry and Trignometry. Prentice Hall, 1960.

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