1. Bellwood, Peter. 2005. Examining the farming/language dispersal hypothesis in the East Asian context. In The Peopling of East Asia: Putting Together Archaeology, Linguistics and Genetics, ed. Laurent Sagart, Roger Blench, and Alicia Sanchez-Mazas. Routledge Curzon.
2. Caldwell, John C. 2006. The analytical approach, In Demographic Transition Theory, ed. John C. Caldwell, 3–19. Springer.
3. Cumings, Bruce. 2005. Korea’s Place in the Sun: A Modern History, updated ed. W. W. Norton & Co.
4. Diamond, Jared. 1998. In search of Japanese roots. Discover Magazine, June 1, 1998.
5. Eisenstadt, S.N. 1996. Japanese Civilization: A Comparative View. University of Chicago Press.