Karsaman, R. H., R. Rodhiatun, H. Al Rasyid, and I. Santoso. “Kajian Investasi Pembangunan Jalan Tol Di Indonesia Berdasarkan Sistem Syariah: Studi Kasus Jalan Tol Cikampek-Palimanan (Study of Toll Road Development Investment in Indonesia Based on Syaria System: The Case of Cikampek-Palimanan Toll Road)”. Journal of Regional and City Planning, vol. 26, no. 2, May 2015, pp. 86-99, doi:10.5614/jpwk.2015.26.2.2.