Caroline, Caroline, Etty Lestari, and Ceasilia Srimindarti. “A Multidimensional Optimum Ecotope Base Algorithm Labour Central Java”. Economics Development Analysis Journal 10, no. 3 (October 5, 2021): 361-381. Accessed May 20, 2022. https://journal.unnes.ac.id/sju/index.php/edaj/article/view/44844.