Guth, Hans P., author
D. C. Heath and Company, 1981
Buku Teks
Chamberlain, Rudolph W., author
Iroquois, 1940
Buku Teks
Melker, Robert de
Wolters-Noordhoff , 1970
Buku Teks
Wurth, Kiene Brillenburg
Amsterdam University Press, 2006
Buku Teks
Longman, 1992
Buku Teks