Jettah, Raphael, et al. “Avocado Farming in Southern Highlands and Its Inherent Threats on Staple Crops Access in Tanzania; A Case of Njombe Urban and Njombe District, Tanzania”. Rural Planning Journal, vol. 1, no. 1, Aug. 2025, pp. 30-43, https://doi.org/10.59557/rpj.1.1.2025.176.