Rosalita L, Purba A, Sulistiyorini R. Terbanggi Besar - Pematang Panggang Toll Road Tariff Based On Ability to Pay and Willingness to Pay. JRSDD [Internet]. 2019May28 [cited 2025Nov.27];7(2):Hal. 321 - 332. Available from: http://journal.eng.unila.ac.id/index.php/jrsdd/article/view/1200