@misc{Polonsʹka-Vasilenko_Natalìâ_Ìstorìâ,
 author={Polonsʹka-Vasilenko, Natalìâ},
 howpublished={online},
 publisher={Libìdʹ},
 language={ukraiński},
 title={Ìstorìâ Ukraïni. Tom 1. Do seredini XVII stolìttâ},
}