Citazione Stile APA (7a Edizione)

Hornby, W. F., & Jones, M. (1980). An introduction to population geography. Cambridge University Press.

Citazione stile Chigago Style (17a edizione)

Hornby, William Fredric, e Melvyn Jones. An Introduction to Population Geography. Cambridge [etc.]: Cambridge University Press, 1980.

Citatione MLA (9a ed.)

Hornby, William Fredric, e Melvyn Jones. An Introduction to Population Geography. Cambridge University Press, 1980.