Page, G. Terry, author
New York, Kogan Page, 1977
Buku Referensi
Larousse, 1972
Buku Referensi
Page, G. Terry, author
MIT Press, 1980
Buku Referensi
Fox, James R., author
Oceana Publication, 1992
Buku Referensi
Presner, Lewis A., author
John Wiley & Sons, 1991
Buku Referensi