Domar, Alice D., author
Henry Holt and Company, 1996
Buku Teks
Blum, Jeanne Elizabeth
Mass Charles E.Tuttle, 1995
Buku Teks
Carlson, Karen J., author
Harvard Universiy press , 1996
Buku Teks
Carlson, Karen J., author
1996
Multimedia
Carlson, Karen J., author
Harvard University Press, 1996
Multimedia