Geary, David M.
Prentice-Hall, 1997
Buku Teks
arranged and edited by Wolfgang Hageney
Belvedere, 1989
Buku Teks
Bob Gordon, consultant editor; Maggie Gordon, consultant editor
Watson-Guptill Publications, 2002
Buku Teks
French, Thomas Ewing, 1871-1944
McGraw-Hill, 1984
Buku Teks
Wolfe, R. J.
Oxford University Press, 2000
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