Czyż, P. P. (2013). "The jubilee of Ignacy Łopieński on the 50th anniversary of his creative activity": About an exhibition that did not take place at the National Museum in Warsaw in 1939.
Chicago-Zitierstil (17. Ausg.)Czyż, Piotr Paweł. "The Jubilee of Ignacy Łopieński on the 50th Anniversary of His Creative Activity": About an Exhibition That Did Not Take Place at the National Museum in Warsaw in 1939. 2013.
MLA-Zitierstil (9. Ausg.)Czyż, Piotr Paweł. "The Jubilee of Ignacy Łopieński on the 50th Anniversary of His Creative Activity": About an Exhibition That Did Not Take Place at the National Museum in Warsaw in 1939. 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.