Browning, W.R.F.
Gunung Mulia, 2010
Buku Referensi
Watchtower Bible and Tract Society of New York , 2004
Buku Teks
Dubin, rese P, author
Prentice Hall Press, 1999
Buku Teks
Walker, J.B.R.
Macmilland,, 1948
Buku Teks
Charles Scribner's Sons, 1989
Buku Referensi