Landau, L. (1939). Seasonal emigration from Poland to Germany and Latvia. International Labour Organization.
Chicago-Zitierstil (17. Ausg.)Landau, Ludwik. Seasonal Emigration from Poland to Germany and Latvia. International Labour Organization, 1939.
MLA-Zitierstil (9. Ausg.)Landau, Ludwik. Seasonal Emigration from Poland to Germany and Latvia. International Labour Organization, 1939.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.