WOELFEL, N. (1945). Radio and the school: A guide-book for teachers and administrators. World Book Company.
Chicago-viite (17. p.)WOELFEL, Norman. Radio and the School: A Guide-book for Teachers and Administrators. World Book Company, 1945.
MLA-viite (9. p.)WOELFEL, Norman. Radio and the School: A Guide-book for Teachers and Administrators. World Book Company, 1945.
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