Lane Crothers, "The cultural roots of isolationism and internationalism in American foreign policy." Journal of Transatlantic Studies 9.1 (2011): 21-34. online
Shi Zhihong (2006), „China's Overseas Trade Policy and Its Historical Results: 1522–1840“, in A. John H. Latham; Heita Kawakatsu (muh.), Intra-Asian Trade and the World Market, Studies in the Modern History of Asia, Abingdon: Routledge, 10-bet, ISBN9781134194087
