Cita APA (7a ed.)

Harvey, M., & Chapple, J. (1996). Gibraltar. Spellmount.

Cita Chicago Style (17a ed.)

Harvey, Maurice, y John Chapple. Gibraltar. Staplehurst, Kent: Spellmount, 1996.

Cita MLA (9a ed.)

Harvey, Maurice, y John Chapple. Gibraltar. Spellmount, 1996.