edited by David E. Long and Bernard Reich
Westview Press, 2002
Buku Teks
Grolier Incorporated, 1964
Buku Referensi
Andreas Bandak
Brill, 2013
eBooks
Walz, Jay, author
Atheneum, 1966
Buku Teks
Walker, Allan S., author
Australian War Memorial, 1956
Buku Teks