Rasarr
Polish cover for ''The Knights of Crystallia''. The book Alcatraz is holding on the cover is titled "Alcatraz and the Mechanic's Key". {{cover |book=a3 |series=Alcatraz |country=Poland |year=2017 |ISBN=9788379660377 |source=[https://www.empik.com/alcatraz-kontra-bibliotekarze-tom-3-rycerze-krystalii-sanderson-brandon,p1154775909,ksiazka-p Empik] }}