Tung Linh, Hoang, 		Thi Tuyet Thu, Tran, AND 		Thi Hue, Tran.
" Assessment of Soil Nutritional Status and Leaf Nutrient Diagnosis in Grapefruit Orchards in Thai Nguyen Province" <em>VNU Journal of Science: Earth and Environmental Sciences</em> [Online], Volume 41 Number 2S (15 November 2025)