APA Citation

Gilbert, M. (1999). Challenge to civilization: A history of the twentieth century, 1952-1999. London: HarperCollins.

Chicago Style Citation

Gilbert, Martin. Challenge to Civilization: A History of the Twentieth Century, 1952-1999. London: HarperCollins, 1999.

MLA Citation

Gilbert, Martin. Challenge to Civilization: A History of the Twentieth Century, 1952-1999. London: HarperCollins, 1999.

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