APA-referens (7:e uppl.)

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.

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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.