World Health Organization. Female sterilization: A guide to provision of service.
Citazione stile Chigago Style (17a edizione)World Health Organization. Female Sterilization: A Guide to Provision of Service.
Citatione MLA (8a ed.)World Health Organization. Female Sterilization: A Guide to Provision of Service.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.