1. AFRICOM, 2014. Sierra Leone. http://www.alu.army.mil/ALU_INTERNAT/CountryNotes/AFRICOM/SIERRA%20LEONE.pdf (accessed 15.11.14).
2. Africa Young Voices (AYV), 2013. Illegal mining on increase in Bombali. By E.L.L. Sannoh, AYV Newspaper online, August 2 2013. http://africayoungvoices.com/2013/08/illegal-mining-on-increase-in-bombali/ (accessed 21.11.14).
3. Strangers and Sierra Leone mining: cultural heritage and sustainable development challenges;Akiwumi;J. Clean. Prod.,2014
4. Awareness Times, 2005. Sierra Leone government warns illicit coltan miners. By S. Kamara. Awareness Times Newspaper online, Nov 8 2005. http://news.sl/drwebsite/exec/view.cgi?archive=2&num=848&printer=1 (accessed 9. 11.14).
5. Awareness Times, 2013. Lifting of suspension of trading and export of zircon and coltan. Awareness Times Newspaper online, Sept 23 2013. http://news.sl/drwebsite/publish/article_200523795.shtml (accessed 12.11.14).