APA ציטוט

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

Chicago Edition Citation

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

ציטוט MLA

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