Page, G. Terry, author
New York, Kogan Page, 1977
Buku Referensi
Larousse, 1972
Buku Referensi
Page, G. Terry, author
MIT Press, 1980
Buku Referensi
Presner, Lewis A., author
John Wiley & Sons, 1991
Buku Referensi
editor in chief Paul Procter
Cambridge University Press, 1995
Buku Referensi