?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.isbn=978-615-6060-30-3&rft.date=2020&rft.title=Tov%C3%A1bbi+aj%C3%A1nlott+irodalom&rft.genre=bookitem