8Shulman, L. S. Those who understand:knowledge growth in teaching. Educational Researcher, 1986, 15(2), 4-15.
9Shulman, L. S. Knowledge and teaching: Foundations of the New Reform. Harvard Educational Review. 1987, 57(1), 1-22.
10Smith, D. C., & Neale, D. C. The Construction of Subject Matter Knowledge in Primary Science Teaching. Teaching & Teacher Education, 1989, 5(1), 1-20.
