@misc{Świst_Karolina_Item,
 author={Świst, Karolina},
 howpublished={online},
 publisher={Educational Research Institute},
 language={eng},
 type={article},
 title={Item analysis and evaluation using a four-parameter logistic model},
 keywords={construct-irrelevant variance, item format, item-writing guidelines, item-writing flaws, four-parameter logistic model},
}