Evans-Pritchard, E.E. (Edward Evan), 1902-1973, author
Routledge, 1972
Buku Teks
Nadel, S.F. (Siegfried Frederick), author
The Free Press of Glencoe, 1964
Buku Teks
Nadel, S.F. (Siegfried Frederick), author
Cohen & West, 1969
Buku Teks
Piddington, Ralph, author
Eidenburgh Oliver , 1960
Buku Teks
Beattie, John, author
The Free Press, 1964
Buku Teks