Johnston, T. D., & Pietrewicz, A. T. (1985). Issues in the ecological study of learning. Hillsdale, N.J.: L. Erlbaum Associates.
Chicago Stili AlıntıJohnston, Timothy D., and Alexandra T. Pietrewicz. Issues in the Ecological Study of Learning. Hillsdale, N.J.: L. Erlbaum Associates, 1985.
MLA AlıntıJohnston, Timothy D., and Alexandra T. Pietrewicz. Issues in the Ecological Study of Learning. Hillsdale, N.J.: L. Erlbaum Associates, 1985.
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