Playfair, J., & Euclid. (1861). Elements of geometry: Containing the first six books of Euclid : with a supplement on the quadrature of the circle, and the geometry of solids : to which are added elements of plane and sphericale trigonometry (Dean's stereotype ed.). Philadelphia: J.B. Lippincott.

Playfair, John, and Euclid. Elements of Geometry: Containing the First Six Books of Euclid : With a Supplement On the Quadrature of the Circle, and the Geometry of Solids : To Which Are Added Elements of Plane and Sphericale Trigonometry. Dean's stereotype ed. Philadelphia: J.B. Lippincott, 1861.

Playfair, John, and Euclid. Elements of Geometry: Containing the First Six Books of Euclid : With a Supplement On the Quadrature of the Circle, and the Geometry of Solids : To Which Are Added Elements of Plane and Sphericale Trigonometry. Dean's stereotype ed. Philadelphia: J.B. Lippincott, 1861.