Mertens, D. M., & McLaughlin, J. A. (2004). Research and evaluation methods in special education. Corwin Press.
Lua i Stíl Chicago (17ú heag.)Mertens, Donna M., agus John A. McLaughlin. Research and Evaluation Methods in Special Education. Thousand Oaks, Calif.: Corwin Press, 2004.
Lua MLA (8ú heag.)Mertens, Donna M., agus John A. McLaughlin. Research and Evaluation Methods in Special Education. Corwin Press, 2004.
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