editor Ruth D. Whitehouse
Facts On File Publications, 1983
Buku Referensi
LeMay, Harold
Facts on File, 1988
Buku Referensi
Finch, Frank
Fac On File Publications, 1985
Buku Referensi
Corbeil, Jean-Claude
Elex Media Komputindo, 1990
Buku Referensi
Whittles, Keith
Tiger Books International, 1994
Buku Referensi