Sorkin, Alan L., author
Massachusetts Lexington Books, 1984
Buku Teks
McLean, Robert A., author
Delmar, 1997
Buku Teks
McLean, Robert A., author
Delmar, 2003
Buku Teks
Mooney, Gavin H., author
MacMillan Press , 1980
Buku Teks
Cullis, John G.
Gregg Revivals , 1991
Buku Teks