« PALYNOZONATION AND PALEO DEPOSITIONAL ENVIRONMENT OF EOCENE-OLIGOCENE SEDIMENTS OF NORTHWESTERN NIGER DELTA BASIN IN NIGERIA ». FULafia Journal of Science and Technology 6, no. 2 (décembre 31, 2020): 11–19. Consulté le mai 17, 2026. https://lafiascijournals.org.ng/index.php/fjst/article/view/140.