Cita APA

Kells, L. M., & Bland, J. R. (1951). Plane and spherical trigonometry (3d ed.). McGraw-Hill.

Citación estilo Chicago

Kells, Lyman M., and James R. Bland. Plane and Spherical Trigonometry. 3d ed. New York: McGraw-Hill, 1951.

Cita MLA

Kells, Lyman M., and James R. Bland. Plane and Spherical Trigonometry. 3d ed. McGraw-Hill, 1951.