APA (7th ed.) Citation

Root, H. (1982). Henry Root's world of knowledge. Weidenfeld and Nicolson.

Chicago Style (17th ed.) Citation

Root, Henry. Henry Root's World of Knowledge. London: Weidenfeld and Nicolson, 1982.

MLA (9th ed.) Citation

Root, Henry. Henry Root's World of Knowledge. Weidenfeld and Nicolson, 1982.

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