New York Oxford university 1983 ,
Buku Teks
edited by David Morley, Jon E. Rohde and Glen Williams
Oxford University Press, 1983
Buku Teks
Churchill Livingstone, 1997
Buku Teks
World Health Organization, 1988
Buku Teks
edited by David M. B. Hall
Oxford University Press, 1991
Buku Teks