found: Hammerslough, Jane. Langur monkey's day, 2003(DLC)2003050366
found: Britannica, viewed August 25, 2023(langur, general name given to numerous species of Asian monkeys belonging to the subfamily Colobinae. The term is often restricted to nearly two dozen species of leaf monkeys but is also applied to various other members of the subfamily.)
found: Merriam Webster, viewed August 25, 2023(langur: any of several slender long-tailed Asian monkeys (subfamily Colobinae))
found: Endangered Primate Rescue Center, viewed August 25, 2023(Langurs are a type of leaf-eating monkey; belong to a family of primates known as Cercopithecidae, or Old World monkeys, with 159 species and 23 genera presently recognized in Aisa)