Beckenbach, Edwin F.
Modern college algebra and trigonometry
Wadsworth, 1968
Buku Teks
Gibilisco, Stan, 1953-
Trigonometry demystified
McGraw-Hill, 2012
Buku Teks
Taylor, Howard E.
Contemporary trigonometry
McGraw-Hill, 1973
Buku Teks
Hackert, Adelbert F.
Elements of trigonometry
D.C. Health, 1971
Buku Teks
Gager, William A.
Contemporary college algebra and trigonometry
Macmillan, 1968
Buku Teks