Holmes, Sandra Le Brun
Penguin Books, 1999
Buku Teks
Burden, Ernest E., 1934-, author
McGraw-Hill, 1996
Buku Teks
Stone, Irving, 1903-1989, author
Doubleday, 1944
Buku Teks
Riesman, David, author
Yale University Press, 1965
Buku Teks
Xu, Chengbei, author
Intercontinental Press, 2010
Buku Teks