Ingpen, Robert, author
Dragon's World, 1995
Buku Referensi
Chen, Chaomei, author
Springer-Verlag, 2011
eBooks
edited by Norma L. Chaska
Mosby , 1990
Buku Teks SO
Ingpen, Robert, author
Dragon's World, 1993
Buku Referensi
compiled and edited by William L. Langer
Houghton Mifflin, 1968
Buku Referensi