Baredwan, Abdullah Husin, and Vita Ratnasari. “Analysis of Business Strategy of PT. Z Uses QSPM and Implementation of Marketing Proposals With Marketing Mix”. Journal Research of Social Science, Economics, and Management 4, no. 11 (June 21, 2025): 1820–1836. Accessed December 5, 2025. https://jrssem.publikasiindonesia.id/index.php/jrssem/article/view/882.