Price, David. Energy and Human Evolution. დაარქივებულია ორიგინალიდან — 2012-06-17. ციტატა: „Fire was used by Homo erectus in northern China more than 400,000 years ago, and there is sketchy evidence suggesting that it may have been used long before that (Gowlett, 1984, pp. 181-82)“ ციტირების თარიღი: 2007-11-12.
webcitation.org
Price, David. Energy and Human Evolution. დაარქივებულია ორიგინალიდან — 2012-06-17. ციტატა: „Fire was used by Homo erectus in northern China more than 400,000 years ago, and there is sketchy evidence suggesting that it may have been used long before that (Gowlett, 1984, pp. 181-82)“ ციტირების თარიღი: 2007-11-12.
