1. Alalade, B., 2006. Hydrocarbon Potential of Late Cretaceous Shales, Chad Basin, NE Nigeria. Unpublished PhD Thesis, University of Newcastle, United Kingdom.
2. Hydrocarbon potential of Late Cretaceous Gongila and Fika Formations, Bornu (Chad) Basin, NE Nigeria;Alalade;Journal of Petroleum Geology,2010
3. Depositional and structural styles in Chad Basin of northeastern Nigeria;Avbovbo;American Association of Petroleum Geologists Bulletin,1986
4. Barss, M.S., Williams, G.L., 1973. Palynology and nannofossil processing technique. Geological Survey of Canada Paper 73, pp. 1–25.
5. The interrelationship of biological marker maturity parameters and molecular yields during contact metamorphism;Bishop;Geochimica et Cosmochimica Acta,1993