Mahmud Sudin, S. S. Lee, and Ahmad Hj. Harun. “A SURVEY OF HEART ROT IN SOME PLANTATIONS OF <em>ACACIA</em> <em>MANGIUM</Em> IN SABAH”. Journal of Tropical Forest Science (JTFS), vol. 6, no. 1, Sept. 1993, pp. 37-47, https://jtfs.frim.gov.my/jtfs/article/view/1869.