Plane and spherical trigonometry /
by Lyman M. Kells, Willis F. Kern and James R. Bland.
APA Citation
Kells, L. M. (Lyman Morse)., Bland, J. R., Kern, W. F. (Willis Frederick). (1935). Plane and spherical trigonometry. New York: McGraw-Hill.
MLA Citation
Kells, Lyman M. (Lyman Morse), 1888-, James R Bland, and Willis F. (Willis Frederick) Kern. Plane And Spherical Trigonometry. New York: McGraw-Hill, 1935.
Warning: These citations may not always be complete (especially for serials).