World Health Organization. (1998). Research abstracts South- East Asia region. WHO.
Chicago-referens (17:e uppl.)World Health Organization. Research Abstracts South- East Asia Region. New Delhi: WHO, 1998.
MLA-referens (8:e uppl.)World Health Organization. Research Abstracts South- East Asia Region. WHO, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.