California Wellness Foundation, Criminal Justice Program (Rand Corporation), Labor and Population Program, & Karoly, L. A. (1998). Investing in our children: What we know and don't know about the costs and benefits of early childhood interventions. Rand.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)California Wellness Foundation, Criminal Justice Program (Rand Corporation), Labor and Population Program, و Lynn A. Karoly. Investing in Our Children: What We Know and Don't Know About the Costs and Benefits of Early Childhood Interventions. Santa Monica, Calif.: Rand, 1998.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)California Wellness Foundation, et al. Investing in Our Children: What We Know and Don't Know About the Costs and Benefits of Early Childhood Interventions. Rand, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.