APA (7th ed.) Citation

Hills, G. (1974). Rock of contention: A history of Gibraltar. Hale.

Chicago Style (17th ed.) Citation

Hills, George. Rock of Contention: A History of Gibraltar. London: Hale, 1974.

MLA (8th ed.) Citation

Hills, George. Rock of Contention: A History of Gibraltar. Hale, 1974.

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