Cita APA

Butler, D., & Sloman, A. (1975). British political facts: 1900 - 1975. Macmillan.

Citación estilo Chicago

Butler, David, y Anne Sloman. British Political Facts: 1900 - 1975. London: Macmillan, 1975.

Cita MLA

Butler, David, y Anne Sloman. British Political Facts: 1900 - 1975. Macmillan, 1975.