APA (7th ed.) Citation

Cipolla, C. M. (1967). The economic history of world population (Fourth edition.). Penguin Books.

Chicago Style (17th ed.) Citation

Cipolla, Carlo M. The Economic History of World Population. Fourth edition. Harmondsworth: Penguin Books, 1967.

MLA (8th ed.) Citation

Cipolla, Carlo M. The Economic History of World Population. Fourth edition. Penguin Books, 1967.