of Family Income on Child Achievement: Evidence from the Earned Income TaxCredit. American Economic Review. 2012/05, 102 (5): 1927–1956 [2018-04-02]. ISSN 0002-8282
(原始内容存档于2020-11-22). Hattenstone, Simon. Cameron shouldn't be allowed to break his taxcredit promise. Here's the solution [卡梅隆不应该允许别人打破他的税收抵免承诺。这里的解决方案]. The Guardian