CHOONG, Chee Guan; ROBERT @ KERK SWEE TIAN; SAW, Chun Lin; KARAM SINGH, Salvinder Singh. The Concept of Solid Fertilizer Dispensing Machine. Politeknik & Kolej Komuniti Journal of Engineering and Technology, Putrajaya, Malaysia, v. 4, n. Special Issue, p. 40–51, 2019. Disponível em: https://app.mypolycc.edu.my/journal/PMJET/article/view/484. Acesso em: 7 sep. 2025.