Lewis (1950; 831-2) as cited in: Mark Figueroa. "Rethinking Caribbean agriculture, re-evaluating Arthur Lewis misunderstood perspective." (2008).
Arthur Lewis: Frases en inglés
Lewis (1979). " Sir Arthur Lewis - Biographical http://www.nobelprize.org/nobel_prizes/economic-sciences/laureates/1979/lewis-bio.html," cited in: Toporowski, Jan. "Sir William Arthur Lewis (1915–91)." Fifty Key Thinkers on Development (2006): 144.