@misc{how+to+study+mathematics+the+manual+for+warsaw+university+1st+year+students+in+the+interwar+period,
    author = {Bartnicka, Kalina},
    title = {How to study mathematics – the manual for Warsaw University 1st year students in the interwar period},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2015},
    number = {Y. 112, iss. 2-NP}
}