Hoq, S., Khan, N. A., & Mia, S. H. (1968). A Course of Higher Trigonometry. Muslim Book Agency.
Chicago-viite (17. p.)Hoq, Shamsul, Nurul Alam Khan, ja Sirajul Haque Mia. A Course of Higher Trigonometry. Malibagh Road, Dhaka: Muslim Book Agency, 1968.
MLA-viite (9. p.)Hoq, Shamsul, et al. A Course of Higher Trigonometry. Muslim Book Agency, 1968.
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