Tilburg : Drukkerij Henri Bergmans N.V
Majalah, Jurnal, Buletin
Helen Dwight Reid Educational Foundation, {s.a}
Majalah, Jurnal, Buletin
Tianjin Tourism Bureau
Tianjin Ancient Books Publishing House, 2009
eBooks
Hollingsworth, T.H., author
Cornell University Press, 1969
Buku Teks
Woodford, A.O., author
W.H. Freeman, 1965
Buku Teks