Tonuma, Koichi. “Globalization, World Habitat and Japanese Identity: From 20th Century Machine-to 21st Century Global Environment-Oriented Civilization”. Ekistics and The New Habitat 73, no. 436-441 (December 1, 2006): pp. 43-53. Accessed April 12, 2021. http://ekisticsjournal.org/index.php/journal/article/view/96.