William K. Chishimba, E. S. Lingumbwanga, and G. M. Chongo. “/Em>”;. Journal of Tropical Forest Science (JTFS) 11, no. 1 (January 25, 1999): 316–319. Accessed February 23, 2025. https://jtfs.frim.gov.my/jtfs/article/view/1501.