Ward, Robert E.
Prentice-Hall, 1967
Buku Teks SO
Ward, Robert E.
Prentice-Hall, 1978
Buku Teks SO
Quigley, Harold S.
University of Minnesota Press, 1956
Buku Teks
Reischauer, Edwin O.
G. Duckworth, 1964
Buku Teks
Japan Culture Institute, [edited by Murakami Hyoe and Johannes Hirschmeier]
Japan Publications Trading , 1979
Buku Teks SO