Syukri, Ifdlol. “QUANTIFYING THE ENVIRONMENTAL VALUE IN WESTERN COAST OF SEMARANG CITY, CENTRAL JAVA, INDONESIA”. Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) 6, no. 1 (May 31, 2016): 97. Accessed October 24, 2021. https://jma.journal.ipb.ac.id/index.php/jpsl/article/view/11407.