O`Malley, L.S.S. (Lewis Sydney Steward), 1874-1941, author
Macmillan, Cambridge, ENg. University Press, 1935
Buku Teks
Herman, A. L., author
Westview Press, 1991
Buku Referensi
Winzeler, Robert L.
Buku Teks
Winzeler, Robert L.
Lanham Rowman & Littlefield, 2016
Buku Teks
Feuchtwang, Stephan, author
Curzon Press , 2001
Buku Teks