Umar, Umar Ali, and Yunusa Onivehu Obadoba. “SOURCES OF RISK IN THE RICE PRODUCTION: A CASE OF SMALLHOLDER FARMERS AND PRODUCERS OF SOBA COMMUNITY IN NORTHERN NIGERIA”. Jurnal Mekanikal, vol. 42, no. 1, Oct. 2019, https://jurnalmekanikal.utm.my/index.php/jurnalmekanikal/article/view/360.