Deismireacht APA

Crathorne, A. R. (1938). Trigonometry. New York: Henry Holt and Company.

Trích dẫn kiểu Chicago

Crathorne, A. R. Trigonometry. New York: Henry Holt and Company, 1938.

Deismireacht MLA

Crathorne, A. R. Trigonometry. New York: Henry Holt and Company, 1938.

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