Nuralam IP. PERAN STRATEGIS PENERAPAN KONSEP SISTER CITY DALAM MENCIPTAKAN SURABAYA GREEN-CITY. JABA [Internet]. 2018 Mar. 29 [cited 2025 Feb. 23];2(1):144-51. Available from: https://jurnal.polibatam.ac.id/index.php/JABA/article/view/807