Eggan, Fred
The University of Chicago Press, 1950
Buku Teks
Goodwin, Grenville, author
University of Chicago Press, 1942
Buku Teks
F.E. Paecock Publ, 1987
Buku Teks
University of Hawaii Press, 1992
Buku Teks
edited by Paul Bohannan and John Middleton
Natural History Press, 1968
Buku Teks