Hart, W. W. (1942). Plane trigonometry, solid geometry and spherical trigonometry. D. C. Heath.
Chicago Style (17th ed.) CitationHart, Walter W. Plane Trigonometry, Solid Geometry and Spherical Trigonometry. Boston: D. C. Heath, 1942.
MLA (9th ed.) CitationHart, Walter W. Plane Trigonometry, Solid Geometry and Spherical Trigonometry. D. C. Heath, 1942.
Warning: These citations may not always be 100% accurate.