Tài liệu tham khảo WikiPedia: Zbylut_Grzywacz http://www.culture.pl/pl/culture/artykuly/os_grzyw... http://encyklopedia.interia.pl/haslo?hid=73148 http://www.malagaleria.pl/wyst_poprz/festival8/zby... http://mak.bn.org.pl/cgi-bin/KHW/makwww.exe?BM=1&N... https://www.getty.edu/vow/ULANFullDisplay?find=&ro... https://catalogue.bnf.fr/ark:/12148/cb149796654 https://data.bnf.fr/ark:/12148/cb149796654 https://id.loc.gov/authorities/names/no2009175802 https://web.archive.org/web/20160303205624/http://... https://isni.org/isni/0000000114485924
