Aspen Systems, 1982
Buku Teks
Aspen Systems Corp., 1980
Buku Teks
Welfed, Joseph A.
American Hospital Publishing, 1996
Buku Teks
edited by Charles D. Schewe
Haworth Press, 1991
Buku Teks
Zuckerman, Alan M., author
Health administration press, 2012
Buku Teks