APA-viite (7. p.)

Kells, L. M. (1940). Plane and sperical trigonometry. McGraw-Hill.

Chicago-viite (17. p.)

Kells, Lyman M. Plane and Sperical Trigonometry. New York: McGraw-Hill, 1940.

MLA-viite (9. p.)

Kells, Lyman M. Plane and Sperical Trigonometry. McGraw-Hill, 1940.