APA (7th ed.) Citation

Churchill, W. S. (1968). The world crisis, 1911-1918 / by W.S. Churchill. New English Library.

Chicago Style (17th ed.) Citation

Churchill, Winston S. The World Crisis, 1911-1918 / by W.S. Churchill. New English Library, 1968.

MLA (9th ed.) Citation

Churchill, Winston S. The World Crisis, 1911-1918 / by W.S. Churchill. New English Library, 1968.

Warning: These citations may not always be 100% accurate.