The Encyclopedia Americana : volume 2
Americana Corporation, 1977
Buku Referensi
The Encyclopedia Americana : volume 1
Americana Corporation, 1977
Buku Referensi
The Encyclopedia Americana : volume 3
Americana Corporation, 1977
Buku Referensi
The Americana annual : 1995
Grolier, 1995
Buku Referensi
The Encyclopedia Americana : volume 4
Americana Corporation, 1977
Buku Referensi