Nattida Luangmaka และผู้แต่งคนอื่นๆ. (2013) Effect of organic fertiliser residues from rice production on nitrogen fixation of soya (Glycine max L. Merrill), Chiang Mai 60 variety. <i>Maejo International Journal of Science and Technology</i>, <i>7</i>(3), 377.Nattida Luangmaka และผู้แต่งคนอื่นๆ. "Effect of organic fertiliser residues from rice production on nitrogen fixation of soya (Glycine max L. Merrill), Chiang Mai 60 variety". Maejo International Journal of Science and Technology 7 (2013):377.Nattida Luangmaka และผู้แต่งคนอื่นๆ. Effect of organic fertiliser residues from rice production on nitrogen fixation of soya (Glycine max L. Merrill), Chiang Mai 60 variety. Maejo University:ม.ป.ท. 2013.