Tonleu, Christelle Apauline Djoufack, et al. “Risks Related to the Use of Chemical Inputs for Crop Production in Nkong-Ni and Penka-Michel, West Cameroon”. International Journal of Rural Development, Environment and Health Research, vol. 4, no. 2, June 2020, https://journal-repository.com/index.php/ijreh/article/view/2018.