Melesse, Birhanu, et al. “takeholders’ Integration in Sorghum and Sesame Seed Supply System. The Case of West Gondar Zone, Amhara Region, Ethiopia”. Journal of Agricultural Extension Management, vol. 21, no. 1, June 2020, p. 123, https://epubs.icar.org.in/index.php/JAEM/article/view/159541.