The Encyclopedia Americana : volume 5
Grolier, 1994
 Buku Referensi
The Encyclopedia Americana : volume 5
Americana Corporation, 1977
 Buku Referensi
The Encyclopedia Americana : volume 5
Americana Corporation, 1964
 Buku Referensi
Collier's encyclopedia : volume 5
Macmillan Educational Company, 1990
 Buku Referensi
The World book encyclopedia : volume 5
World Book, 1985
 Buku Referensi