Here are the sources ordered within each category:
Jean Piaget's Cognitive Development Theory:
- Piaget, J. (1970). The Science of Education and the Psychology of the Child. New York: Viking Press.
- Piaget, J. & Inhelder, B. (1969). The Psychology of the Child. New York: Basic Books.
- Flavell, J. H. (1963). The Developmental Psychology of Jean Piaget. New York: Wiley.
- Cowan, P. A., & Hetherington, E. M. (1996). The Handbook of Child Psychology: Vol. 1. Theoretical Models of Human Development (5th ed.). New York: Wiley.
Lev Vygotsky's Sociocultural Theory:
- Vygotsky, L. S. (1978). Mind in Society: The Development of Higher Psychological Processes. Cambridge, MA: Harvard University Press.
- Vygotsky, L. S. (1986). Thought and Language. Cambridge, MA: MIT Press.
- Wertsch, J. V. (1985). Vygotsky and the Social Formation of Mind. Cambridge, MA: Harvard University Press.
- Daniels, H. (2001). Vygotsky and Pedagogy. New York: Routledge.
Comparative Overview and Application:
- Berk, L. E. (2013). Development Through the Life Span (6th ed.). Boston: Pearson.
- Gredler, M. E. (2009). Learning and Instruction: Theory into Practice (6th ed.). Upper Saddle River, NJ: Pearson.
- Santrock, J. W. (2018). Life-Span Development (9th ed.). New York: McGraw-Hill Education.
This ordering maintains an academic citation style, placing primary foundational works first, followed by subsequent analyses, overviews, and applications in each category.