Cita APA

Machray, R. (1941). The Polish-German problem: Poland's western provinces are the condition of her independence. Allen & Unwin.

Citación estilo Chicago

Machray, Robert. The Polish-German Problem: Poland's Western Provinces Are the Condition of Her Independence. London: Allen & Unwin, 1941.

Cita MLA

Machray, Robert. The Polish-German Problem: Poland's Western Provinces Are the Condition of Her Independence. Allen & Unwin, 1941.