1. Abeles, M. (1981). In search of the monarchy: Introduction of the state among the Gamo of Ethiopia. In D. Crummey & C. C. Stewart (Eds.), Modes of production in Africa: The pre-colonial Era (pp. 35–68). Beverly Hills: Sage.
2. Abera, U. (2014). Interface between indigenous agricultural knowledge and modern agricutural technology and their impacts on food security in Gamo Highland, Southwest Ethiopia. PhD thesis, University of South Africa.
3. Aberoumand, A., & Deokule, S. (2009). Studies on nutritional values of some wild edible plants from Iran and India. Pakistan Journal of Nutrition, 8(1), 26–31.
4. Afolayan, A., & Jimoh, F. (2009). Nutritional quality of some wild leafy vegetables in South Africa. International Journal of Food Science and Nutrition, 60(5), 424–431.
5. Almaz, N. (2001). Diversity and conservation of enset (Ensete Ventricosum Welw. Cheesman) and its relation to household food and livelihood security in South Western Ethiopia. PhD thesis; Wageningen University, the Netherlands.