Levi, H. (1960). Foundations of geometry and trignometry. Prentice Hall.
Chicagoスタイル(17版)引用形式Levi, Howard. Foundations of Geometry and Trignometry. Englewood Cliffs: Prentice Hall, 1960.
MLA(9版)引用形式Levi, Howard. Foundations of Geometry and Trignometry. Prentice Hall, 1960.
警告: この引用は必ずしも正確ではありません.