APA (7th ed.) Citation

Buchanan, K. (1972). The geography of empire. Spokesman Books.

Chicago Style (17th ed.) Citation

Buchanan, Keith. The Geography of Empire. Nottingham: Spokesman Books, 1972.

MLA (9th ed.) Citation

Buchanan, Keith. The Geography of Empire. Spokesman Books, 1972.

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