Butler, B. Robert
The Idaho State University Museum, 1968
Buku Teks
South, Stanley
Academic Press, 1977
Buku Teks
Underhill, Ruth M., author
The University Of Chicago Press, 1965
Buku Teks
Day, A. Grove (Arthur Grove), 1904-1994, author
University of Nebraska Press, 1951
Koleksi Publik
Jenness, Diamond, author
National Museum of Canada, 1960
Buku Teks