Stickney, Clyde P., author
Harcourt Brace Jovanovich, 1991
Buku Teks
Young, David W., author
Crimson Press Curriculum Center, 1994
Buku Teks
Gaertner, James F.
Prentice-Hall, 1985
Buku Teks
Mongometry, A. Thomson
Masa Addison Wesley 1982, 1982
Buku Teks
Walgenbach, Paul H.
Harcourt Brace Jovanovich, 1990
Buku Teks