Hasbullah Kasim Bakry, author
Widjaya, 1970
Buku Teks
Eddy, Mary Baker G.
Boston Trustees under the Will of Mary Baker G. Eddy 1936
Buku Teks
Creme, Benjamin
The Tara Press , 1980
Buku Teks
Moseley, Edwin M., author
University of Pittsburgh Press, 1962
Buku Teks
Weingast, David E.
Julian Messner,Inc., 1962
Buku Teks