APA (7th ed.) Citation

GRAY. (1979). A history of London. Taplinger Publ. Compony.

Chicago Style (17th ed.) Citation

GRAY. A History of London. New York: Taplinger Publ. Compony, 1979.

MLA (8th ed.) Citation

GRAY. A History of London. Taplinger Publ. Compony, 1979.