Cita APA

West, N. (1985). MI6: British secret intelligence service operations 1909-45. Grafton.

Citación estilo Chicago

West, Nigel. MI6: British Secret Intelligence Service Operations 1909-45. London: Grafton, 1985.

Cita MLA

West, Nigel. MI6: British Secret Intelligence Service Operations 1909-45. Grafton, 1985.