WHO. (1987). Mechanism of action, safety and efficacy of intrauterine devices. Geneva.
Chicago Edition CitationWHO. Mechanism of Action, Safety and Efficacy of Intrauterine Devices. Geneva, 1987.
Cita MLAWHO. Mechanism of Action, Safety and Efficacy of Intrauterine Devices. Geneva, 1987.
Atenció: Aquestes cites poden no estar 100% correctes.