Das, B. C., & Mukherjee, B. N. Higher Trigonometry (26th ed.). U.N. Dhur & Sons.
Chicagoスタイル(17版)引用形式Das, B. C., , B. N. Mukherjee. Higher Trigonometry. 26th ed. Calcutta: U.N. Dhur & Sons.
MLA(9版)引用形式Das, B. C., , B. N. Mukherjee. Higher Trigonometry. 26th ed. U.N. Dhur & Sons.
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