Akomolafe G. F., Zakaria R., Rusly R., Fatai O., and Bernard O. “FERNS RICHNESS ALONG ENVIRONMENTAL GRADIENTS IN AYER HITAM FOREST, PENINSULAR MALAYSIA”. FUDMA JOURNAL OF SCIENCES, Vol. 7, no. 4, Aug. 2023, pp. 206 -16, doi:10.33003/fjs-2023-0704-1919.