@misc{Ponikowska_Maria_Ludmiła_Polish,
 author={Ponikowska, Maria Ludmiła},
 copyright={Ponikowska, Maria Ludmiła},
 address={London},
 howpublished={online},
 publisher={Polish Students Association in Great Britain},
 language={eng},
 type={broszura},
 title={Polish youth : yesterday, today and tomorrow},
}