APA
W.H.O. Tech Report services no.756, . (1987). Children at work : special health risks. W.H.O., Geneva: .
Chicago
W.H.O. Tech Report services no.756, . 1987. Children at work : special health risks. W.H.O., Geneva: .
Harvard
W.H.O. Tech Report services no.756, . (1987). Children at work : special health risks. W.H.O., Geneva: .
MLA
W.H.O. Tech Report services no.756, . Children at work : special health risks. W.H.O., Geneva: . 1987.