Wenwerth, George
Plane trigonometry and tables / by George Wenwerth and David Eugene Smith
Ginn and Co., 1914
Buku Teks
Rice, Bernard J.
Plane trigonometry
Prindle, Weber & Schmidt, 1975
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Buchanan, Herbert E.
Plane trigonometry
Johnson Pub., 1926
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Brink, Raymond
Plane trigonometry / Raymond Brink
D. Appleton-Century Co., 1940
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Ballou, Ronald H.
Plane and spherical trigonometry
Ginn, 1943
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