Abdul Wahab Rahman, et al. “Helminthic Parasites of Scavenging Chickens (Gallus Domesticus) from Villages in Penang Island, Malaysia”. Tropical Life Sciences Research, vol. 20, no. 1, July 2009, pp. 1–6, https://ejournal.usm.my/tlsr/article/view/tlsr_vol20-no-1-2009_1.