World Health Organization. (1990). Health education in the control of schistosomiasis. World Health Organization.
Chicago-referens (17:e uppl.)World Health Organization. Health Education in the Control of Schistosomiasis. Geneva: World Health Organization, 1990.
MLA-referens (8:e uppl.)World Health Organization. Health Education in the Control of Schistosomiasis. World Health Organization, 1990.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.