APA-viite

Duncan, G. J., & Sojourner, A. J. (2013). Can Intensive Early Childhood Intervention Programs Eliminate Income-Based Cognitive and Achievement Gaps? J Hum Resour.

Chicago-tyylinen lähdeviittaus

Duncan, Greg J., ja Aaron J. Sojourner. "Can Intensive Early Childhood Intervention Programs Eliminate Income-Based Cognitive and Achievement Gaps?" J Hum Resour 2013.

MLA-viite

Duncan, Greg J., ja Aaron J. Sojourner. "Can Intensive Early Childhood Intervention Programs Eliminate Income-Based Cognitive and Achievement Gaps?" J Hum Resour 2013.

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