Rosmadi, Nur Syahirah, Nursufiah Sulaiman, Noorzamzarina Sulaiman, and Junaidi Asis. 2022. “ Sabah Based on Calcareous Nannofossil”. Journal of Tropical Resources and Sustainable Science (JTRSS) 10 (1):20-27. https://doi.org/10.47253/jtrss.v10i1.894.