Melda Yenni. “ANALISIS KADAR LOGAM TIMBAL DARAH PETUGAS STASIUN PENGISIAN BENSIN UMUM (SPBU) KOTA JAMBI”. Journal of Innovation Research and Knowledge 1, no. 5 (October 26, 2021): 773–776. Accessed July 5, 2025. https://mail.bajangjournal.com/index.php/JIRK/article/view/339.