Clifford, James, 1945-
Harvard University Press, 1988
Buku Teks
Lowie, Robert H.
Holt Rinehart and Winston, 1937
Buku Teks
Harris, Marvin, 1927-2001
Routledge & Kegan Paul LTD, 1969
Buku Teks
Darnell, Regna
Harper & Row, 1974
Buku Teks
Murphy, Robert F.
George Allen and Unwin, 1972
Buku Teks