edited by Hoarst Noack
University Park Press , 1980
Buku Teks
Ducanis, Alex J.
Aspen Publication, 1979
Buku Teks
Aspen Publication, 1995
Buku Teks
King, Maurice H. (Maurice Henry)
Oxford University Press, 1978
Buku Teks
World Health Organization, 1988
Buku Teks