Winkler, G. (1969). Die demokratische Leistungsschule.
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Chicago Style (17th ed.) Citation
Winkler, Gertrud. Die Demokratische Leistungsschule. 1969.
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ציטוט MLA
Winkler, Gertrud. Die Demokratische Leistungsschule. 1969.
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אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.