Geissler, G. (1961). Das Problem der Unterrichtsmethode. Beltz.
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Chicago Style (17th ed.) Citation
Geissler, Georg. Das Problem Der Unterrichtsmethode. Weinheim, Bergstr: Beltz, 1961.
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ציטוט MLA
Geissler, Georg. Das Problem Der Unterrichtsmethode. Beltz, 1961.
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אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.