McKeague, C. P. (1984). Trigonometry. Harcourt brace.
Tohutoru Kātū Chicago (17th ed.)McKeague, Charles P. Trigonometry. San Diego: Harcourt brace, 1984.
Tohutoro MLA (9th ed.)McKeague, Charles P. Trigonometry. Harcourt brace, 1984.
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