Masatsugu, Mitsuyuki
Amacom, 1982
Buku Teks
Macdonald, Donald Stone
Westview Press, 1988
Buku Teks
Barnes, Harry Elmer, author
Prentice-Hall, 1950
Buku Teks
Cornell University Press , 1993
Buku Teks
edited by Hee-yeon Cho, Lawrence Surendra and Hyo-je Cho
New York, NY : Routledge, 2013
Buku Teks