@misc{Korcz_Maria_The_2011,
 author={Korcz, Maria},
 type={artykuł},
 publisher={Wydawnictwo Akademii im. Jana Długosza w Częstochowie},
 title={The difficulties in integrating mathematics with other teaching subjects},
 address={Częstochowa},
 year={2011},
 language={eng},
}