Cita APA (7a ed.)

Francis, D., & Waterfield, R. (1992). The edge. Penguin Books.

Cita Chicago Style (17a ed.)

Francis, Dick, y Robin Waterfield. The Edge. London: Penguin Books, 1992.

Cita MLA (9a ed.)

Francis, Dick, y Robin Waterfield. The Edge. Penguin Books, 1992.