Hariyanto, Annisa Dira, Dimas Tri Rendra Graha, and Firman Afrianto. 2024. “Regional Economic Agglomeration and Trans-Sumatra Toll Road Development: A Network and Spatial Review”. Journal of Infrastructure Policy and Management (JIPM) 7 (1):75-95. https://jipm.iigf.co.id/index.php/jipm/article/view/38.