Everyman's encyclopaedia : volume eleven / edited by E. F. Bozman
J. M. Dent & Sons, 1958
 Buku Referensi
The New Encyclopaedia Britannica : propaedia
Encyclopaedia Britannica Inc., 1988
 Buku Referensi
Encyclopaedia Britannica CD 97
Encyclopaedia Britannica, inc, 1997
 Multimedia
Everyman's encyclopaedia : volume one
edited by E. F. Bozman
J. M. Dent & Sons, 1958
 Buku Referensi
Everyman's encyclopaedia : volume two
edited by E. F. Bozman
J. M. Dent & Sons, 1958
 Buku Referensi