Hsu, Immanuel C.Y.
New York Oxford University Press 1995,
Buku Teks
Huff, Toby E., 1942-, author
Cambridge University Press, 2003
Buku Teks
Fitzgerald, Robert, 1959-, author
Cambridge University Press, 2015
Buku Teks
Hackett, Francis
Bantam Books, 1958
Buku Teks
Pile, John F.
John Wiley & Sons, 1979
Buku Teks