Bauer, Peter T.
The University of Chicago Press, 1966
Buku Teks
Cullis, John G.
Gregg Revivals , 1991
Buku Teks
Boken, Vijendra K., author
Oxford University Press, 2005
Buku Teks
Walstad, William B., author
McGraw-Hill, 2002
Buku Teks
Clark, James E., author
Houghton Mifflin, 2002
Buku Teks