Underhill, Ruth M.
Red man's religion: beliefs and practices of the Indians North of Mexico
The University Of Chicago Press, 1965
 Buku Teks
Driver, Harold E.
Indians of North America
The University of Chicago Press, 1961
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Hultkrantz, Ake
Conceptions of the soul among North American Indians: a study in relafions ethnology / by Ake Hultkrantz
The Humanistic Foundation of Sweden, 1953
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Jenness, Diamond
The Indians of Canada
National Museum of Canada, 1960
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Jones, Rodwell Ll.
North America: an historical, economic and regional geography
Methuen, 1950
 Buku Teks