Esbensen, T. (1968). Working with individualized instruction: The Duluth experience. Fearon Publishers.
Chicago-viite (17. p.)Esbensen, Thorwald. Working with Individualized Instruction: The Duluth Experience. Palo Alto, Calif.: Fearon Publishers, 1968.
MLA-viite (8. p.)Esbensen, Thorwald. Working with Individualized Instruction: The Duluth Experience. Fearon Publishers, 1968.
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