Fanani, Achmad Thoriq, and sukaris sukaris. “Marketing Strategy To Carry Out Market Expansion At Gresik Petrokimia Hospital”. INNOVATION RESEARCH JOURNAL 4, no. 2 (January 11, 2024): 153–160. Accessed June 6, 2025. https://journal.umg.ac.id/index.php/innovation/article/view/7009.