Cita APA

Das, B. C., & Mukherjee, B. N. Higher Trigonometry (26th ed.). U.N. Dhur & Sons.

Citación estilo Chicago

Das, B. C., and B. N. Mukherjee. Higher Trigonometry. 26th ed. Calcutta: U.N. Dhur & Sons.

Cita MLA

Das, B. C., and B. N. Mukherjee. Higher Trigonometry. 26th ed. U.N. Dhur & Sons.