Dienstfrey, Harris
HarperPerennial , 1991
Buku Teks
MacLachlan, Malcolm, author
Open University Press, 2004
Buku Teks
Barasch, Marc Ian
Penguin , 1995
Buku Teks
Dossey, Barbara Montgomery, author
J.B. Lippincott , 1992
Buku Teks
Thibodeau, Gary A., 1938-2013, author
Elsevier, 2005
Buku Teks