Sagala, S.U.B. et al. 2022. Providing Snacks to Leek Farmer to Reduce Fatigue and Workload While Working on the Farm. Jurnal BETA (Biosistem dan Teknik Pertanian). 10, 1 (Apr. 2022), 147–153. DOI:https://doi.org/10.24843/JBETA.2022.v10.i01.p15.