Zakaria I. 1993. Reproductive Biology. In: Acacia mangium — Growing and Utilization. MPTS Monograph Series No. 3. Winrock International and FAO, Bangkok, Thailand, pp 21–34.
Zakaria I, Kamis A. 1991. Comparison of floral morphology, flower production and pollen yield of Acacia mangium and A. auri-culiformis. In: Advances in Tropical Acacia Research, (Turnbull JW, ed), Proceedings of an International Workshop, Bangkok, Thailand, 11–15 February, 1991. ACIAR Proceedings No. 35: 26–29.