Stradley, W. E. (1973). Administrator's guide to an individualized performance results curriculum. Center for Applied Research in Education.
Lua i Stíl Chicago (17ú heag.)Stradley, William E. Administrator's Guide to an Individualized Performance Results Curriculum. New York: Center for Applied Research in Education, 1973.
Lua MLA (9ú heag.)Stradley, William E. Administrator's Guide to an Individualized Performance Results Curriculum. Center for Applied Research in Education, 1973.
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