“KANDUNGAN LOGAM BERAT DALAM TUMBUHAN PERISA (HALIA DAN SERAI) YANG DITANAM DALAM TANAH ULTRABES DI RANAU, SABAH, MALAYSIA: HEAVY METAL CONTENT IN FLAVORING PLANTS (GINGER AND LEMONGRASS) GROWN IN ULTRABASE SOIL IN RANAU, SABAH, MALAYSIA”. Jurnal Teknologi (Sciences & Engineering) 88, no. 3 (April 30, 2026): 385–393. Accessed September 13, 2026. https://journals.utm.my/jurnalteknologi/article/view/23690.