T. A., Olajubaje, et al. “Depositional Environments and Geochemical Assessments of the Bende Ameki Formation Potential As Petroleum Source Rocks in the Ogbunike Quarry, South-Eastern Nigeria”. European Scientific Journal, ESJ, vol. 14, no. 27, Sept. 2018, p. 157, doi:10.19044/esj.2018.v14n27p157.