Birge, John Kingsley
Hartford Seminary Press, 1937
Buku Teks
Bullard, Paddy
Cambridge University Press, 2011
eBooks
Burke, W. Warner
Addison-Wesley, 1987
Buku Teks
Burke, James
Michael Joseph LTD, 1945
Buku Teks
Asceruc-Todd, Ines
Brill, 2015
Buku Teks