Dyfyniad APA

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.

Dyfyniad Arddull Chicago

Crookston, B., R. Forste, C. McClellan, A. Georgiadis, and 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.

Dyfyniad MLA

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.

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