Cita APA (7a ed.)
Childe, V. G. (1942). What happened in history. Penguin Books.
Cita Chicago Style (17a ed.)
Childe, V. Gordon. What Happened in History. Harmondsworth, Middlesex, U.K.: Penguin Books, 1942.
Cita MLA (9a ed.)
Childe, V. Gordon. What Happened in History. Penguin Books, 1942.
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