Παραπομπή APA

WHO. (1987). Mechanism of action, safety and efficacy of intrauterine devices. Geneva.

Παραπομπή Chicago Style

WHO. Mechanism of Action, Safety and Efficacy of Intrauterine Devices. Geneva, 1987.

Παραπομπή MLA

WHO. Mechanism of Action, Safety and Efficacy of Intrauterine Devices. Geneva, 1987.

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