Jagadisan, Sharmila, and Tom Fookes. “Antecedents for the Ekistic Grid and the Anthropocosmos Model: A Critical View of Ekistic Methodology”. Ekistics and The New Habitat 73, no. 436-441 (December 1, 2006): pp. 265-276. Accessed October 24, 2020. http://ekisticsjournal.org/index.php/journal/article/view/123.