APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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