Sulnawati, E., S. H. Abdullah, and A. Priyati. “Analisis Teknis Dan Kajian Ergonomika Berdasarkan Antropometri Pada Penggunaan Traktor Tangan Untuk Lahan Sawah: Anthropometry Based Technical Analysis and Ergonomic Studies on Utilization of Hand Tractor for Farm Field”. Jurnal Ilmiah Rekayasa Pertanian Dan Biosistem, vol. 4, no. 2, Sept. 2016, pp. 239-47, https://jrpb.unram.ac.id/index.php/jrpb/article/view/29.