APA Citation

Gilbert, M. (2001). History of the twentieth century. London: HarperCollins Publishers.

Chicago Style Citation

Gilbert, Martin. History of the Twentieth Century. London: HarperCollins Publishers, 2001.

MLA Citation

Gilbert, Martin. History of the Twentieth Century. London: HarperCollins Publishers, 2001.

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