Lua APA (7ú heag.)
ebrary, Inc, & Fernbach, D. (2011). In the steps of Rosa Luxemburg: Selected writings of Paul Levi. Belll.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus David Fernbach. In the Steps of Rosa Luxemburg: Selected Writings of Paul Levi. Leiden ; Boston: Belll, 2011.
Lua MLA (9ú heag.)
ebrary, Inc, agus David Fernbach. In the Steps of Rosa Luxemburg: Selected Writings of Paul Levi. Belll, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.