Card, D., & Robins, P. K. (1996). Do financial incentives encourage welfare recipients to workn: Evidence from a randomnized evaluation of the self-sufficiency project. National Bureau of Economic Research.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Card, David, و Phillip K. Robins. Do Financial Incentives Encourage Welfare Recipients to Workn: Evidence from a Randomnized Evaluation of the Self-sufficiency Project. Cambridge: National Bureau of Economic Research, 1996.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Card, David, و Phillip K. Robins. Do Financial Incentives Encourage Welfare Recipients to Workn: Evidence from a Randomnized Evaluation of the Self-sufficiency Project. National Bureau of Economic Research, 1996.
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