Górka, O. (1942). Outline of Polish History: Past and present (1. Aufl.). Kolin.
Lua i Stíl Chicago (17ú heag.)Górka, Olgierd. Outline of Polish History: Past and Present. 1. Aufl. London: Kolin, 1942.
Lua MLA (8ú heag.)Górka, Olgierd. Outline of Polish History: Past and Present. 1. Aufl. Kolin, 1942.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.