Murphy, Gardner
Basic Books, Inc., 1953
Buku Teks
Unnithan, T. K. N.
J. B. Wolters-Groningen, 1956
Buku Teks
Natarajan, A.
Asia Publishing House, 1959
Buku Teks
Clarendon Press, 1971
Buku Teks
England, George W.
Kent State University Press , 1974
Buku Teks