Cita APA (7a ed.)

Morris, D. S., & Haigh, R. H. (1992). Britain, Spain, and Gibraltar, 1945-1990: The eternal triangle. Routledge.

Cita Chicago Style (17a ed.)

Morris, D. S., y R. H. Haigh. Britain, Spain, and Gibraltar, 1945-1990: The Eternal Triangle. London ; New York: Routledge, 1992.

Cita MLA (8a ed.)

Morris, D. S., y R. H. Haigh. Britain, Spain, and Gibraltar, 1945-1990: The Eternal Triangle. Routledge, 1992.