Chatterji, P. (1996). Trigonometry. Rajhans.
Cita Chicago (17th ed.)Chatterji, P.N. Trigonometry. Meerut: Rajhans, 1996.
Cita MLA (9th ed.)Chatterji, P.N. Trigonometry. Rajhans, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)