Das, B. C., & Mukherjee, B. N. Higher Trigonometry (26th ed.). U.N. Dhur & Sons.
Chicago-čujuhus (17. p.)Das, B. C., juo B. N. Mukherjee. Higher Trigonometry. 26th ed. Calcutta: U.N. Dhur & Sons.
MLA-čujuhus (9. p.)Das, B. C., juo B. N. Mukherjee. Higher Trigonometry. 26th ed. U.N. Dhur & Sons.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.