Ritter, Lawrence S., author
Basic Books, 1970
Buku Teks
Rickards, James, author
Portfolio Penguin, 2015
Buku Teks
Halm, George N., author
University of North-Carolina Press, 1945
Buku Teks
Brahmananda, P.R.
Humanities Press, 1969
Buku Teks
Moffitt, Michael, author
Simon and Schuster, 1983
Buku Teks