Phommexay, P.; Chaiyes, A.; Duengkae, P.; Chuaynkern, C.; Chuaynkern, Y. Estimation of population and threats of Northern White-cheeked Gibbon (Nomascus leucogenys) in Phou Khao Khouay National Biodiversity Conservation Area, Lao PDR. Agr. Nat. Resour. 2024, 58, 453–462.