editor-in-chief, Trevor N. Dupuy
Brassey's, 1993
Buku Referensi
Americana Corporation, 1960
Buku Referensi
edited by David L. Sills
Macmillan and The Free Press, 1968
Buku Referensi
Americana Corporation, 1977
Buku Referensi
Americana Corporation, 1964
Buku Referensi