Gumkowski, J., & Leszczyński, K. 1. V. (1961). Poland under Nazi occupation. Polonia Publ. House.
Chicago Style (17th ed.) CitationGumkowski, Janusz, and Kazimierz 19XX-2010 VerfasserIn Leszczyński. Poland Under Nazi Occupation. Warsaw: Polonia Publ. House, 1961.
MLA (8th ed.) CitationGumkowski, Janusz, and Kazimierz 19XX-2010 VerfasserIn Leszczyński. Poland Under Nazi Occupation. Polonia Publ. House, 1961.
Warning: These citations may not always be 100% accurate.