Poller, S. (1980). Was man alles daraus machen kann. Kinderbuchverlag.
Chicago Style (17. basım) AtıfPoller, Siegfried. Was Man Alles Daraus Machen Kann. Berlin: Kinderbuchverlag, 1980.
MLA (8th ed.) AtıfPoller, Siegfried. Was Man Alles Daraus Machen Kann. Kinderbuchverlag, 1980.
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