M.E. Sharpe, 1979
Buku Teks SO
MacNair, Harley Farnsworth, 1891-1947
Commercial Press, 1926
Buku Teks
Abdullah Dahana
Lembaga Penelitian Universitas Indonesia, 2002
Artikel Jurnal
The Institute of Chine Studies Center for the Studies, Center for the Study of Developing Societies,
Majalah, Jurnal, Buletin
Navarro, Peter
Gramedia, 2008
Buku Teks SO