Artikel Jurnal
Kokusai Bunken Insatsusha, 2008
Majalah, Jurnal, Buletin
Chiang, Alpha C., 1927-, author
Holt, Rinehart and Winston, 1968
Buku Teks
Asbjorn Eide, Catarina Krause, editor; Rini Adriati, translator
Brill Academic, 2001
Buku Teks
Riggs, James L., author
McGraw-Hill, 1996
Buku Teks