APA-viite (7. p.)
Center for International Education (CEINE). (1972). Nonformal alternatives to schooling: A glossary of educational methods.
Chicago-viite (17. p.)
Center for International Education (CEINE). Nonformal Alternatives to Schooling: A Glossary of Educational Methods. 1972.
MLA-viite (9. p.)
Center for International Education (CEINE). Nonformal Alternatives to Schooling: A Glossary of Educational Methods. 1972.
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