MacNair, Harley Fransworth
Commercial Press, 1926
Buku Teks
Jones, F.C.
American Council Instiutute of Pacific Relations, 1940
Buku Teks
Someren, Taco C.R. van, author
[Springer-Verlag, ], 2012
eBooks
Scott, David
Routledge, 2007
Buku Teks
Shinobu, J.
Meruzen Company, 1933
Buku Teks