Larson, Gary, author
Andrews and McMeel, 1994
Buku Teks SO
Architect Indomegah, 2006
Buku Teks
Choisgallery
Choi's Gallery , 2009
Buku Referensi
Gerges, Fawaz A, author
Cambridge University Press, 2005
Buku Teks
Clyde, Paul Hibbert, author
Prentice-Hall, 1953
Buku Teks