Fitrimawati. “Mobile Commerce Establishment for Livestock Marketing Development in West Sumatera: An Approach to Systems Requirement Analysis”. International Journal of Psychosocial Rehabilitation 24, no. 6 (June 30, 2020): 1937–1944. Accessed June 29, 2025. https://www.psychosocial.com/index.php/ijpr/article/view/6661.