Field Enterprises Educational Corporation, 1963
Buku Referensi
P.F. Collier & Son, 1954
Buku Referensi
F.E. Compton & Company, 1963
Buku Referensi
editor-in-chief, Trevor N. Dupuy
Brassey's, 1993
Buku Referensi
edited by Jan Vincents Johannessen
McGraw-Hill, 1995
Buku Referensi