Temu, E. J., and J. P. Hella. “Assessment of the Impact of Sustainable Land Use Practices on Food Security in West Usambara Mountains, Tanzania”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 14, no. 2, Sept. 2014, pp. 1-13, https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/2623.