Cita APA (7th ed.)

Davis, H. A. a. C. (1933). Brief course in plane and sperical trigonometry. American Book.

Cita Chicago (17th ed.)

Davis, H. A. and Chambers. Brief Course in Plane and Sperical Trigonometry. New ork: American Book, 1933.

Cita MLA (9th ed.)

Davis, H. A. and Chambers. Brief Course in Plane and Sperical Trigonometry. American Book, 1933.