edited by M.G. Mori
J.L. Thompson, 1937
Buku Teks
Brosse, Jacques, author
Facts on File Publications, 1983
Buku Referensi
White, C. Langdon, author
Prentice-Hall, 1943
Buku Teks
Marryat, Frederick
Alfred A. Knopf, 1962
Buku Teks
Rand McNally and Company.
Rand Mcnally & Company, 2006
Buku Teks