C.M. Okolocha et al. 2026. Concentrations of Organochlorine Pesticide (OCP) Residues in Environmental and Biota Samples from Azuabie and Okujagu Creeks, Upper Bonny Estuary, Nigeria. International Journal of Sciences: Basic and Applied Research (IJSBAR). 79, 1 (Jul. 2026), 274–289.