APA (7th ed.) Citation

Lean. (1978). Rich world, poor world. George Allen & Unwin.

Chicago Style (17th ed.) Citation

Lean. Rich World, Poor World. London: George Allen & Unwin, 1978.

MLA (8th ed.) Citation

Lean. Rich World, Poor World. George Allen & Unwin, 1978.

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