Artikel Jurnal
Wei, Liqun, author
People's Publishing House, 2009
Buku Teks
Kuznets, Simon Smith, 1901-, author
W.W. Norton&Company-Inc, 1965
Buku Teks
Wei, Heping, compiler
China Intercontinental Press, 2009
Buku Teks
Hamby, Alonzo L.
Weybright and Talley, 1976
Buku Teks