Bjorgvinsson, David Thor, author
Edward Elgar Publishing, 2015
Buku Teks
Palombino, Fulvio Maria, author
Cambridge University Press, 2019
eBooks
Giles, O. C. (Otto Charles)
Sijthoff, 1970
Buku Teks
Edited by David Sloss
Cambridge University Press, 2013
Buku Teks
Jayakumar, S., author
Singapore University Press, 1974
Buku Teks