Grant, Michael
Charles Scribner's Sons, 1969
Buku Teks
Branigan, Keith, author
Heinemann, 1976
Buku Referensi
Brinton, Crane, 1898-1968, author
Prentice-Hall, 1963
Buku Teks
Needham, Joseph, author
Cambridge University Press, 1956
Buku Teks
Jack M. Sasson, Johan Baines, Gary Beckman, Karen S. Rubinson, editor
Charles Scribner's Sons, 1995
Buku Referensi