APA (7th ed.) Citation

Kearns, G. (2009). Geopolitics and empire: The legacy of Halford Mackinder. Oxford University Press.

Chicago Style (17th ed.) Citation

Kearns, Gerard. Geopolitics and Empire: The Legacy of Halford Mackinder. Oxford, UK: Oxford University Press, 2009.

MLA (9th ed.) Citation

Kearns, Gerard. Geopolitics and Empire: The Legacy of Halford Mackinder. Oxford University Press, 2009.

Warning: These citations may not always be 100% accurate.