Ilyas, Ahmad. “Proxemics Dalam Ruang Publik Perkotaan: Studi Mode Choice Pada Masyarakat Penglaju Jabodetabek”. Indonesian Journal of Sociology and Education Policy 2, no. 1 (March 16, 2018): 48 - 69. Accessed January 23, 2020. http://journal.unj.ac.id/unj/index.php/ijsep/article/view/6228.