@misc{Sawicki_Ludwik_(1893–1972)_Łajsk_1923,
 author={Sawicki, Ludwik (1893–1972)},
 volume={53},
 copyright={Creative Commons Attribution BY 3.0 PL license},
 journal={Spuścizna prof. Ludwika Sawickiego : teczki archiwalne},
 howpublished={online},
 year={1923},
 language={pol},
 title={Łajsk},
 type={Text},
 URL={http://www.rcin.org.pl/Content/77169/PDF/WA308_90589_A-TA-LS-53-21_Lajsk_I.pdf},
 keywords={archaeological sites -- Poland, Piaski (Legionowo, Poland), Legionowo, mazowieckie voivodeship (Poland)},
}