en Henshilwood, Christopher S.; d'Errico, Francesco; Marean, Curtis W.; Milo, Richard G.; Yates, Royden (). „An early bone tool industry from the Middle Stone Age at Blombos Cave, South Africa: implications for the origins of modern human behaviour, symbolism and language”. Journal of Human Evolution. 41 (6): 631–678. doi:10.1006/jhev.2001.0515. PMID11782112.
en Henshilwood, Christopher S.; Dubreuil, Benoit (). „The Still Bay and Howiesons Poort, 77–59 ka: Symbolic Material Culture and the Evolution of the Mind during the African Middle Stone Age”. Current Anthropology. 52 (3): 361–400. doi:10.1086/660022.
en Henshilwood, Christopher S.; d'Errico, Francesco; Marean, Curtis W.; Milo, Richard G.; Yates, Royden (). „An early bone tool industry from the Middle Stone Age at Blombos Cave, South Africa: implications for the origins of modern human behaviour, symbolism and language”. Journal of Human Evolution. 41 (6): 631–678. doi:10.1006/jhev.2001.0515. PMID11782112.