edited by Ezra F. Vogel
Charles E. Tuttle, 1980
Buku Teks
Radford, K.J., author
Phoenix Press, 1981
Buku Teks
Hock, Oo Yu
UMCB Publication, 1980
Buku Teks
Simon, Herbert A., author
Macmillan, 1955
Buku Teks
Simon, Herbert A., author
Macmillan, 1961
Buku Teks