Bennett, J. G. (1948). Crisis in human affairs. London: Hodder & Stoughton.
Lua i Stíl Chicago (17ú heag.)Bennett, John G. Crisis in Human Affairs. London: Hodder & Stoughton, 1948.
Lua MLA (8ú heag.)Bennett, John G. Crisis in Human Affairs. London: Hodder & Stoughton, 1948.
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