Ahsan, M. F. and Khan, M. R. (2007) “Eco-ethology of the common langur <i>Semnopithecus entellus</i> (Dufresne) in Bangladesh”,
University Journal of Zoology, Rajshahi University
, 25, pp. 3–10. doi: 10.3329/ujzru.v25i0.317.