IPPF. International Planned Parenthood Federation. EN: International Planned Parenthood Federation.
シカゴスタイル引用形IPPF. International Planned Parenthood Federation. EN: International Planned Parenthood Federation.
MLA引用形式IPPF. International Planned Parenthood Federation. EN: International Planned Parenthood Federation.
警告: この引用は必ずしも正確ではありません.