Zimmer, Heinrich
Pantheon Books, 1955
Buku Teks
Sypher, Wylie
Doubleday & Company, 1956
Buku Teks
Cambridge University Press, 2019
eBooks
Christian, J.W., author
Pergamon Press, 1975
Buku Teks
Huttermann, Michael, author
Oxford University Press, 2017
eBooks