APA (7th ed.) Citation

Van Denover, A., & Rizaldo, G. N. (1979). A new approach to plane geometry. Philippine Book Co.

Chicago Style (17th ed.) Citation

Van Denover, Alice, and Gregorio N. Rizaldo. A New Approach to Plane Geometry. [Manila]: Philippine Book Co, 1979.

MLA (9th ed.) Citation

Van Denover, Alice, and Gregorio N. Rizaldo. A New Approach to Plane Geometry. Philippine Book Co, 1979.