Wartapa, Agus, et al. “PENGARUH SISTIM TANAM JAJAR LEGOWO TERHADAP HASIL PADI (Oryza Sativa L)”. Jurnal Ilmu-Ilmu Pertanian, vol. 21, no. 1, July 2015, pp. 35-45, https://jiip.polbangtanyoma.ac.id/index.php/jiip/article/view/148.