Ha, T. M. “Production Efficiency and Quality of Mustard Greens (<i>Brassica juncea</I> (L.) Czern) Cultivated According to the Vietnamese Good Agricultural Practice (VietGAP) Guideline in Thai Nguyen City”. Asian Journal of Agriculture and Food Sciences, vol. 2, no. 4, Aug. 2014, https://ajouronline.com/index.php/AJAFS/article/view/1602.