de Fretes, Richard, and Fransina Tibalilatu. “RENCANA PENGEMBANGAN USAHA GETAH DAMAR DENGAN METODE SWOT DAN QSPM (QUANTITATIVE STRATEGIC PLANNING MATRIKS)”. ALE Proceeding 5 (October 17, 2022): 141-147. Accessed May 3, 2024. https://ojs3.unpatti.ac.id/index.php/ale/article/view/6362.