APA (7th ed.) Citation

Thomas, H. (1982). An unfinished history of the world (rev. ed.). Hamilton.

Chicago Style (17th ed.) Citation

Thomas, Hugh. An Unfinished History of the World. rev. ed. London: Hamilton, 1982.

MLA (9th ed.) Citation

Thomas, Hugh. An Unfinished History of the World. rev. ed. Hamilton, 1982.