Papacostea, Serban
[publisher not identified], 1975
Buku Teks
Che, Jixin
Shandong Jiaoyu chubanshe, 1996
Buku Teks
Tapsell, R.F., author
Thames and Hudson, 1987
Buku Referensi
Tongnyok, 2008
Buku Teks
Woodcock, George
Hurtig Publishers, 1975
Buku Teks