Harms, T., Clifford, R. M., & Cryer, D. (2005). Early childhood environment rating scale (Rev. ed., updated.). Teachers College, Columbia University..
Chicago Style aipamenaHarms, Thelma, Richard M. Clifford, and Debby Cryer. Early Childhood Environment Rating Scale. Rev. ed., updated. New York: Teachers College, Columbia University., 2005.
MLA aipamenaHarms, Thelma, et al. Early Childhood Environment Rating Scale. Rev. ed., updated. Teachers College, Columbia University., 2005.
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