Lewis, David C., author
Curzon, 2000
Buku Teks
Brown, L. Carl, author
Columbia University Press, 2000
Buku Teks
edited by Robert N. Bellah
Free Press, 1965
Buku Teks
edited by Stanislaw Grodz, Gina Gertrud Smith
Brill, 2014
eBooks
Ryan, N J
Oxford Univ. Press, 1967
Buku Teks