Cita APA (7th ed.)
Churchill, W. S. (1948). Step by step 1936-1939. Odhams Press.
Cita Chicago (17th ed.)
Churchill, Winston Spencer. Step by Step 1936-1939. London: Odhams Press, 1948.
Cita MLA (9th ed.)
Churchill, Winston Spencer. Step by Step 1936-1939. Odhams Press, 1948.
Atenció: Aquestes cites poden no estar 100% correctes.