
Machray, R. (1941). The Polish-German problem: Poland's western provinces are the condition of her independence. Allen & Unwin.
Citação norma ChicagoMachray, Robert. The Polish-German Problem: Poland's Western Provinces Are the Condition of Her Independence. London: Allen & Unwin, 1941.
Citação norma MLAMachray, Robert. The Polish-German Problem: Poland's Western Provinces Are the Condition of Her Independence. Allen & Unwin, 1941.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.