APA
W.H.O. Tech Report services no.742, . (1987). Technology for water supply and sanitation in developing countries. W.H.O., Geneva: .
Chicago
W.H.O. Tech Report services no.742, . 1987. Technology for water supply and sanitation in developing countries. W.H.O., Geneva: .
Harvard
W.H.O. Tech Report services no.742, . (1987). Technology for water supply and sanitation in developing countries. W.H.O., Geneva: .
MLA
W.H.O. Tech Report services no.742, . Technology for water supply and sanitation in developing countries. W.H.O., Geneva: . 1987.