Crookston, B., Forste, R., McClellan, C., Georgiadis, A., & Heaton, T. (2014). Factors associated with cognitive achievement in late childhood and adolescence: The Young Lives cohort study of children in Ethiopia, India, Peru, and Vietnam. BioMed Central.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Crookston, B., R. Forste, C. McClellan, A. Georgiadis, و T. Heaton. Factors Associated with Cognitive Achievement in Late Childhood and Adolescence: The Young Lives Cohort Study of Children in Ethiopia, India, Peru, and Vietnam. BioMed Central, 2014.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Crookston, B., et al. Factors Associated with Cognitive Achievement in Late Childhood and Adolescence: The Young Lives Cohort Study of Children in Ethiopia, India, Peru, and Vietnam. BioMed Central, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.