Ọ̀pọ̀lopọ̀ lọ ń gbé lórí Niger Delta, ọ̀pọ̀lọpọ̀ sì mọ ibè sí Oil Rivers nítorí ibè ni wọ́n ti ń ṣe epo Pupa ní Nàìjíríà.[3] Ibẹ̀ náà sì jẹ́ ibi tí ọ̀pọ̀lopọ̀ epo rọ̀bì.[4][5]
↑Umoh, Unyime U.; Li, Li; Wang, Junjian; Kauluma, Ndamononghenda; Asuquo, Francis E.; Akpan, Ekom R. (August 2022). "Glycerol dialkyl glycerol tetraether signatures in tropical mesotidal estuary sediments of Qua Iboe River, Gulf of Guinea". Organic Geochemistry170: 104461. Bibcode2022OrGeo.17004461U. doi:10.1016/j.orggeochem.2022.104461.
↑Otoabasi, Akpan (2011). The Niger Delta Question and the peace plan. Spectrum Books.
↑ 4.04.1Aghalino, S.O (2004). Combating the Niger Delta Crisis: an appraisal of Federal Government response to Anti-Oil protect in Niger Delta, 1958-2002.. Maiduguri journal of Historical studies.
↑Dakolo, Bubaraye (2021). The Riddle of the Oil Thief. Lagos: Purple Shelves. pp. 117–170. ISBN9789789889907.
↑Akpan, D. (2006). Oil Exploration and environmental degradation in the Niger Delta. A paper presented at the first regional conference..
↑CRS Report for Congress, Nigeria: Current Issues. Updated 30 January 2008.