APA (7 वां संस्करण) प्रशस्ति पत्र

Hart, W. W. (1950). Plane geometry. D.C. Health and Company.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Hart, Walter Wilson. Plane Geometry. Boston: D.C. Health and Company, 1950.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Hart, Walter Wilson. Plane Geometry. D.C. Health and Company, 1950.