Cita APA (7th ed.)
Kearns, G. (2009). Geopolitics and empire: The legacy of Halford Mackinder. Oxford University Press.
Cita Chicago (17th ed.)
Kearns, Gerard. Geopolitics and Empire: The Legacy of Halford Mackinder. New York, N.Y.: Oxford University Press, 2009.
Cita MLA (9th ed.)
Kearns, Gerard. Geopolitics and Empire: The Legacy of Halford Mackinder. Oxford University Press, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.