@misc{Pytlak_Marta_The_2007,
 author={Pytlak, Marta},
 type={artykuł},
 publisher={Wydawnictwo Akademii im. Jana Długosza w Częstochowie},
 title={The role of interaction between students in the process of discovering the regularity},
 address={Częstochowa},
 year={2007},
 language={eng},
}