@misc{the+principles+of+plant+selection+in+gardens+designed+by+eduard+petzold+1815+1891,
    author = {Jaworek, Justyna},
    title = {The principles of plant selection in gardens designed by Eduard Petzold (1815-1891)},
    journal = {Technical Transactions},
    address = {Kraków},
    publisher = {<a href=\"http://www.wydawnictwo.pk.edu.pl/\" target=\"_blank\">Wydawnictwo PK</a>},
    date = {2014},
    number = {Y. 111, iss. 6-A}
}