Procolobus verus olive colobus (Van Beneden’s colobus)
Authors: Oates, J.F. and Korstjens, A.H.
Editors: Butynski, T.M., Kingdon, J. and Kalina, J.
Volume: II: Primates
Pages: 121-124
Publisher: Bloomsbury Publishing
Place of Publication: London
Source: Manual
Preferred by: Amanda Korstjens