Cita APA (7th ed.)
Rose, W. J. (1939). Poland. Penguin Books.
Cita Chicago (17th ed.)
Rose, William John. Poland. London: Penguin Books, 1939.
Cita MLA (9th ed.)
Rose, William John. Poland. Penguin Books, 1939.
Atenció: Aquestes cites poden no estar 100% correctes.