Indera E, Sihombing M, Muluk C, . R. Determination of Free Trade Zone and Free Port Development Area Development in Batam City, Riau Islands, Indonesia. IJET [Internet]. 2018 Aug. 24 [cited 2024 May 5];7(3.30):489-96. Available from: https://www.sciencepubco.com/index.php/ijet/article/view/18417