APA-viite (7. p.)
Schramm, W. Television and educational reform in el salvador: Summary report of the first year of research.
Chicago-viite (17. p.)
Schramm, Wilbur. Television and Educational Reform in El Salvador: Summary Report of the First Year of Research.
MLA-viite (9. p.)
Schramm, Wilbur. Television and Educational Reform in El Salvador: Summary Report of the First Year of Research.
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