f, F. N., Amar Al Kadri, & Wulan Sari Kifki Telaumbanua. (2025). Product Innovation and Its Impact on Firm Competitiveness: Evidence from PT Martabak Mak Yung. Young Journal of Social Sciences and Humanities, 1(1), 225–237. Retrieved from https://journal.sufiya.org/index.php/yjssh/article/view/237