APA
World Health Organization, . (1990). Health education in the control of schistosomiasis. World Health Organization, Geneva: .
Chicago
World Health Organization, . 1990. Health education in the control of schistosomiasis. World Health Organization, Geneva: .
Harvard
World Health Organization, . (1990). Health education in the control of schistosomiasis. World Health Organization, Geneva: .
MLA
World Health Organization, . Health education in the control of schistosomiasis. World Health Organization, Geneva: . 1990.