PALMER, C. I. &. o. (1198). Plane and spherical trigonometry. McGraw-Hill.
Cita Chicago (17th ed.)PALMER, Claude Irwin & others. Plane and Spherical Trigonometry. New York: McGraw-Hill, 1198.
Cita MLA (9th ed.)PALMER, Claude Irwin & others. Plane and Spherical Trigonometry. McGraw-Hill, 1198.
Atenció: Aquestes cites poden no estar 100% correctes.