1. Alexander, E. R. (1993). Density measures: A review and analysis. Journal of Architectural and Planning Research, 10(3), 181–202. https://www.jstor.org/stable/43028746?seq=1#metadata_info_tab_contents
2. Atlas of urban expansion–2016 Edition;Lincoln Institute of Land Policy,2016
3. ASPO. (1958). Floor area ratio (Planning Advisory Service Information Report No. 111, June). American Society of Planning Officials (ASPO). https://www.planning.org/pas/reports/report111.htm
4. Banai, R., & DePriest, T. (2014). Urban sprawl: Definitions, data, methods of measurement, and environmental consequences. Journal of Sustainability Education, 7(December). http://www.jsedimensions.org/wordpress/wp-content/uploads/2014/12/Banai-DePriest-JSE-Vol-7-Dec-2014.pdf