APA (7th ed.) Citation

Clarke, J. I. (1977). Population geography (2. ed., reprinted.). Pergamon Press.

Chicago Style (17th ed.) Citation

Clarke, John Innes. Population Geography. 2. ed., reprinted. Oxford [u.a.]: Pergamon Press, 1977.

MLA (9th ed.) Citation

Clarke, John Innes. Population Geography. 2. ed., reprinted. Pergamon Press, 1977.