Tran, Vi, and Sanh Nguyen. “Effect of N, P, K, Cytokinin and Water Stress on the Flowering Time of Dendrobium Sonia”. Science and Technology Development Journal 18, no. 2 (June 30, 2015): 56-63. Accessed December 22, 2024. http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/1143.