Backwell, L; d'Errico, F; Wadley, L (2008). "Middle Stone Age bone tools from the Howiesons Poort layers, Sibudu Cave, South Africa". Journal of Archaeological Science. 35 (6): 1566–1580. Bibcode:2008JArSc..35.1566B. doi:10.1016/j.jas.2007.11.006.
Nunn, John; Rowling, John (2001). "The Eye of the Needle in Predynastic Egypt". The Journal of Egyptian Archaeology. 87: 171–172. doi:10.2307/3822378. JSTOR3822378.
fashionencyclopedia.com
"Prehistoric Clothing". www.fashionencyclopedia.com. Fashion, Costume, and Culture: Clothing, Headwear, Body Decorations, and Footwear through the Ages. Retrieved 26 January 2016.
harvard.edu
ui.adsabs.harvard.edu
Backwell, L; d'Errico, F; Wadley, L (2008). "Middle Stone Age bone tools from the Howiesons Poort layers, Sibudu Cave, South Africa". Journal of Archaeological Science. 35 (6): 1566–1580. Bibcode:2008JArSc..35.1566B. doi:10.1016/j.jas.2007.11.006.
Nunn, John; Rowling, John (2001). "The Eye of the Needle in Predynastic Egypt". The Journal of Egyptian Archaeology. 87: 171–172. doi:10.2307/3822378. JSTOR3822378.