APA (7th ed.) Citation

Clarke, J. I. (1972). Population geography (Second edition.). Pergamon Press.

Chicago Style (17th ed.) Citation

Clarke, John Innes. Population Geography. Second edition. Oxford ; Elmsford, NY: Pergamon Press, 1972.

MLA (9th ed.) Citation

Clarke, John Innes. Population Geography. Second edition. Pergamon Press, 1972.

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