ebrary, Inc, Citro, C. F., & Hanushek, E. A. (1997). Assessing policies for retirement income: Needs for data, research, and models. National Academy Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)ebrary, Inc, Constance F. Citro, و Eric A. Hanushek. Assessing Policies for Retirement Income: Needs for Data, Research, and Models. Washington, D.C.: National Academy Press, 1997.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)ebrary, Inc, et al. Assessing Policies for Retirement Income: Needs for Data, Research, and Models. National Academy Press, 1997.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.