JONES, Jim Ellis; NEILL, Dave O; RICHES, Charlie; SIMS, Brian. Farming Systems: Future Challenges for the Use of Draught Animals in Agricultural Development with Emphasis on Sub-Saharan Africa. Annals of Arid Zone, India, v. 44, n. 3 & 4, 2016. Disponível em: https://epubs.icar.org.in/index.php/AAZ/article/view/66132. Acesso em: 3 nov. 2025.