Fiedler, C. R. (2000). Making a difference: Advocacy competencies for special education professionals. Allyn and Bacon.
Lua i Stíl Chicago (17ú heag.)Fiedler, Craig R. Making a Difference: Advocacy Competencies for Special Education Professionals. Boston: Allyn and Bacon, 2000.
Lua MLA (9ú heag.)Fiedler, Craig R. Making a Difference: Advocacy Competencies for Special Education Professionals. Allyn and Bacon, 2000.
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