Chapin, Ned, author
McGraw-Hill, 1973
Buku Teks
Leventhal, Lance A., author
McGraw-Hill, 1986
Buku Teks
Leventhal, Lance A., author
Mcraw-Hill, 1978
Buku Teks
Ford, William
Lexington D.C. Heath and Co., 1988
Buku Teks
Abel, Peter, 1932-, author
Prentice-Hall, 1997
Buku Teks