World Health Organization
World Health Organization, 1976
Buku Teks
United Nations
United Nations, 1990, c1991, c1994
Buku Teks
editor in chief, C.B. Bourne
University of British Columbia Press, 1978-1982
Buku Teks
United Nations, 1989
Buku Teks
United Nations, 1987
Buku Teks