Tsurumi, Yoshi
Praeger, 1978
Buku Teks
Charles E. Tutle Co.Inc, 1959,
Buku Referensi
Beaty, Wayne H.
McGraw-Hill Publishing Company, 1990
Buku Referensi
International Research Center,
Majalah, Jurnal, Buletin
Prindl, Andreas R.
John Wiley & Sons, 1981
Buku Teks