{{Cite| publisher = Guttmacher Institute International Union for the Scientific Study of Population| last1 = Guillaume| first1 = Agnès| last2 = Elisabeth| first2 = Oliveras| last3 = Letamo| first3 = Gobopamang| title = Examples of Methods to Address Underreporting of Induced Abortion: Preceding Birth Technique and Randomized Response Technique| date = 2010}}