Piel, Gerard
N.Y. Alfred A. Knopf , 1962
Buku Teks
edited and with an introd. by Arnold B. Arons [and] Alfred M. Bork
Prentice-Hall, 1964
Buku Teks
Third World Network, 1988
Buku Teks
Needham, Joseph
Pilot Press, 1945
Buku Teks
Needham, Joseph
Cambridge University Press, 1996
Buku Referensi