Rosmadi, N. S. ., Sulaiman, N. ., Sulaiman, N. and Asis, J. . (2022) “ Sabah based on calcareous nannofossil”., Journal of Tropical Resources and Sustainable Science (JTRSS) , 10(1), pp. 20–27. doi: 10.47253/jtrss.v10i1.894.