Somjee, AH
St. MArtin's Press, 1979
Buku Teks
Gorringe, Hugo, author
Oxford University Press, 2017
eBooks
Select Publishing, 2001
Buku Teks
Appleby, Paul H., author
Louisiana State University Press, 1952
Buku Teks
edited by Gregory H. Fox and Brad R. Roth
Cambridge University Press, 2000
Buku Teks