The Encyclopedia Americana : volume 22
Americana Corporation, 1977
Buku Referensi
The Encyclopedia Americana : volume 22
Americana Corporation, 1964
Buku Referensi
Collier's encyclopedia : volume 22
Macmillan Educational Company, 1990
Buku Referensi
The World book encyclopedia : volume 22
World Book, 1984
Buku Referensi
The Encyclopedia Americana : the international reference work, volume 22
Americana Corporation, 1960
Buku Referensi