Lindberg, Donald A.B.
Charles C. Thomas, 1968
Buku Teks SO
American Public Health Association, 1973
Buku Teks SO
edited by Hoarst Noack
University Park Press , 1980
Buku Teks SO
Jacobs, Philip
Aspen Publication, 1987
Buku Teks SO
edited by Gordon Mclachlan
Nuffield Provincial Hospital Trust, 1972
Buku Teks