APA (7th ed.) Citation

Bullock, A. (1971). The twentieth century: A Promethean age. Thames and Hudson.

Chicago Style (17th ed.) Citation

Bullock, Alan. The Twentieth Century: A Promethean Age. London: Thames and Hudson, 1971.

MLA (9th ed.) Citation

Bullock, Alan. The Twentieth Century: A Promethean Age. Thames and Hudson, 1971.

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