Thompson, Martin J.
An Aspen , 1979
Buku Teks
Porter-O`Grady, Tim
Mosby, 1998
Buku Teks
Barker, Carol
Sage Publications, 1996
Buku Teks
edited by Edward Hence Shortliffe and James J. Cimino
Springer, 2006
Buku Teks
Stamatis, Diomidis H.
Chicago Irwin 1996 , 1996
Buku Teks