APA (7th ed.) Citation

Hart, W. W., & Hart, W. L. R. (1942). Solid geometry and spherical trigonometry. D. C. Heath and company.

Chicago Style (17th ed.) Citation

Hart, Walter W., and William Le Roy Hart. Solid Geometry and Spherical Trigonometry. Boston: D. C. Heath and company, 1942.

MLA (9th ed.) Citation

Hart, Walter W., and William Le Roy Hart. Solid Geometry and Spherical Trigonometry. D. C. Heath and company, 1942.