Gredler, M. E. (2001). Learning and instruction: Theory into practice (4th ed.). Merrill.

Gredler, Margaret E. Learning and Instruction: Theory into Practice. 4th ed. Upper Saddle River, N.J.: Merrill, 2001.

Gredler, Margaret E. Learning and Instruction: Theory into Practice. 4th ed. Merrill, 2001.