IPPF. International Planned Parenthood Federation. International Planned Parenthood Federation.
Citazione stile Chigago Style (17a edizione)IPPF. International Planned Parenthood Federation. EN: International Planned Parenthood Federation.
Citatione MLA (9a ed.)IPPF. International Planned Parenthood Federation. International Planned Parenthood Federation.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.