1. Addo, M. A., Affum, H. A., Botwe, B. O., Gbadago, J. K., Acquah, S. A., Senu, J. K., Adom, T., Coleman, A., Adu, P. S., & Mumuni, I. I. (2012). Assessment of water quality and heavy metal levels in water and bottom sediment samples from Mokwé Lagoon, Accra, Ghana. Research Journal of Environmental and Earth Sciences, 4, 119–130.
2. Alemagi, D., Oben, P. M., & Ertel, J. (2006). Mitigating industrial pollution along the Atlantic coast of Cameroon: an overview of government efforts. The Environmentalist, 26, 41–50.
3. Alyazichi, Y. M., Jones, B. G., & McLean, E. (2015). Source identification and assessment of sediment contamination of trace metals in Kogarah Bay, NSW, Australia. Environmental Monitoring and Assessment, 187, 20. doi: 10.1007/s10661-014-4238-z .
4. Asaah, V. A., Abimbola, A. F., & Suh, C. E. (2006). Heavy metal concentrations and distribution in surface soils of the bassa industrial zone 1, Douala, Cameroon. Arabian Journal for Science and Engineering, 31, 147–158.
5. Asangwe, C.K. (2006). The Douala coastal lagoon complex, Cameroon: environmental issues. Administering Marine Spaces: International Issues. Denmark. FIG 36.