APA
W.H.O. Tech Report services no.753, . (1987). Mechanism of action, safety and efficacy of intrauterine devices. W.H.O., Geneva: .
Chicago
W.H.O. Tech Report services no.753, . 1987. Mechanism of action, safety and efficacy of intrauterine devices. W.H.O., Geneva: .
Harvard
W.H.O. Tech Report services no.753, . (1987). Mechanism of action, safety and efficacy of intrauterine devices. W.H.O., Geneva: .
MLA
W.H.O. Tech Report services no.753, . Mechanism of action, safety and efficacy of intrauterine devices. W.H.O., Geneva: . 1987.