Cohen, L., Manion, L., & Morrison, K. (2009). Research methods in education (6th ed.). London; New York: Routledge.
Chicago Stili AlıntıCohen, Louis, Lawrence Manion, and Keith Morrison. Research Methods in Education. 6th ed. London; New York: Routledge, 2009.
MLA AlıntıCohen, Louis, Lawrence Manion, and Keith Morrison. Research Methods in Education. 6th ed. London; New York: Routledge, 2009.
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