1. Rekha Kathal, V. C., et al. International Research Journal of Environment Sciences. 5, (2016): 1–6.
2. Ekevwe, Ambrose, E., et al. Journal of Biotechnology and Bioengineering. 2.2 (2018): 36–39.
3. Dwivedi, Anil, K., International Research Journal of Natural and Applied Sciences. 4.1 (2017): 118–142.
4. Bonavigo, Lucia, Massimo Zucchetti, and Hysen Mankolli, Journal of International Environmental Application and Science. 4.3 (2009): 357–363.
5. An Agricultural Pollutant: Chemical Fertilizer