Martínez, I.; Rosa, M.; Quam, R.; Jarabo, P.; Lorenzo, C.; Bonmatí, A.; Gómez-Olivencia, A.; Gracia, A.; Arsuaga, J.L. (2013-05-08). "Communicative capacities in Middle Pleistocene humans from the Sierra de Atapuerca in Spain". Quaternary International (به انگلیسی). 295: 94–101. doi:10.1016/j.quaint.2012.07.001. ISSN1040-6182.
Streeter et al. 2001, Margret (2001). "Histomorphometric age assessment of the Boxgrove 1 tibial diaphysis". Journal of Human Evolution. 40 (4): 331–338. doi:10.1006/jhev.2001.0460. PMID11312585.
Streeter et al. 2001, Margret (2001). "Histomorphometric age assessment of the Boxgrove 1 tibial diaphysis". Journal of Human Evolution. 40 (4): 331–338. doi:10.1006/jhev.2001.0460. PMID11312585.
Martínez, I.; Rosa, M.; Quam, R.; Jarabo, P.; Lorenzo, C.; Bonmatí, A.; Gómez-Olivencia, A.; Gracia, A.; Arsuaga, J.L. (2013-05-08). "Communicative capacities in Middle Pleistocene humans from the Sierra de Atapuerca in Spain". Quaternary International (به انگلیسی). 295: 94–101. doi:10.1016/j.quaint.2012.07.001. ISSN1040-6182.