GONZALEZ KIRCHNER, J. P. (2004) – zootier-lexikon.org https://www.zootier-lexikon.org/index.php?option=com_k2&view=item&id=7573%3Agonzalez-kirchner-j-p-2004
Cercopithecus preussi), on Bioko island, Equatorial Guinea
Cercopithecus preussi), on Bioko island, Equatorial Guinea