APA (7th ed.) Citation

Great Britain. Foreign Office. (1966). Gibraltar, talks with Spain, May-October 1966. H.M.S.O..

Chicago Style (17th ed.) Citation

Great Britain. Foreign Office. Gibraltar, Talks with Spain, May-October 1966. London: H.M.S.O., 1966.

MLA (8th ed.) Citation

Great Britain. Foreign Office. Gibraltar, Talks with Spain, May-October 1966. H.M.S.O., 1966.