DeVries, R., & Sales, C. (2011). Ramps & pathways: A constructivist approach to physics with young children. National Association for the Education of Young Children.
Citazione stile Chigago Style (17a edizione)DeVries, Rheta, e Christina Sales. Ramps & Pathways: A Constructivist Approach to Physics with Young Children. Washington, D.C: National Association for the Education of Young Children, 2011.
Citatione MLA (9a ed.)DeVries, Rheta, e Christina Sales. Ramps & Pathways: A Constructivist Approach to Physics with Young Children. National Association for the Education of Young Children, 2011.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.