@misc{retractable+roofs+in+engineering+education,
    author = {Pawlak-Jakubowska, Anita i Romaniak, Krystyna},
    title = {Retractable roofs in engineering education},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {Wydawnictwo Politechniki Krakowskiej},
    date = {2020},
    number = {Vol. 117, iss. 1 }
}