APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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