Cita APA (7a ed.)

Sloan, G. R., Gray, C. S., & Gray, C. (1999). Geopolitics, geography, and strategy. Frank Cass.

Cita Chicago Style (17a ed.)

Sloan, G. R., Colin S. Gray, y Colin Gray. Geopolitics, Geography, and Strategy. London: Frank Cass, 1999.

Cita MLA (9a ed.)

Sloan, G. R., et al. Geopolitics, Geography, and Strategy. Frank Cass, 1999.