Davis, H. A. a. C. (1933). Brief course in plane and sperical trigonometry. American Book.
Cita Chicago Style (17a ed.)Davis, H. A. and Chambers. Brief Course in Plane and Sperical Trigonometry. New ork: American Book, 1933.
Cita MLA (9a ed.)Davis, H. A. and Chambers. Brief Course in Plane and Sperical Trigonometry. American Book, 1933.
Precaución: Estas citas no son 100% exactas.