Karl, C. A. (1990). Teacher observation in selected secondary schools of the Archdiocese of Chicago.
Citace podle Chicago (17th ed.)Karl, Catherine A. Teacher Observation in Selected Secondary Schools of the Archdiocese of Chicago. 1990.
Citace podle MLA (8th ed.)Karl, Catherine A. Teacher Observation in Selected Secondary Schools of the Archdiocese of Chicago. 1990.
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