Walgenbach, Paul H.
Harcourt Brace Jovanovich, 1984
Buku Teks
Mongometry, A. Thomson
Masa Addison Wesley 1982, 1982
Buku Teks
Foulke, Roy Anderson, 1896-
McGraw-Hill, 1968
Buku Teks
Wild, John J.
McGraw-Hill, 2001
Buku Teks
Smith, Jack L.
McGraw-Hill, 1980
Buku Teks