APA (7th ed.) Citation

Churchill, W. (1971). Step by step, 1936-1939. Books for Libraries Press.

Chicago Style (17th ed.) Citation

Churchill, Winston. Step by Step, 1936-1939. Freeport, N.Y.: Books for Libraries Press, 1971.

MLA (9th ed.) Citation

Churchill, Winston. Step by Step, 1936-1939. Books for Libraries Press, 1971.