Nur Juliani Shafie, et al. “Diversity Pattern of Bats at Two Contrasting Habitat Types Along Kerian River, Perak, Malaysia”. Tropical Life Sciences Research, vol. 22, no. 2, Dec. 2011, pp. 13–22, https://ejournal.usm.my/tlsr/article/view/tlsr_vol22-no-2-2011_2.