WHO. (1987). Mechanism of action, safety and efficacy of intrauterine devices. Geneva.
Citación estilo ChicagoWHO. Mechanism of Action, Safety and Efficacy of Intrauterine Devices. Geneva, 1987.
Cita MLAWHO. Mechanism of Action, Safety and Efficacy of Intrauterine Devices. Geneva, 1987.
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