APA

Palmer C. I., Leigh C. W. & Leigh C. W. (1916). Planer and spherical trigonometry. New York: McGraw-Hill Book Company.

Chicago

Palmer Claude Irwin, Leigh Charles Wilber and Leigh Charles Wilber. 1916. Planer and spherical trigonometry. New York: McGraw-Hill Book Company.

Harvard

Palmer C. I., Leigh C. W. and Leigh C. W. (1916). Planer and spherical trigonometry. New York: McGraw-Hill Book Company.

MLA

Palmer Claude Irwin, Leigh Charles Wilber and Leigh Charles Wilber. Planer and spherical trigonometry. New York: McGraw-Hill Book Company. 1916.