Long, Khuat Dang, Le Xuan Hue, Dang Thi Hoa, and Pham Huy Phong. “A Preliminary Study on Bees (Hemenoptera: Apoidea: Apiformes) from Northern and North Central Vietnam”. Academia Journal of Biology 34, no. 4 (January 13, 2013): 414–421. Accessed March 29, 2024. https://vjs.ac.vn/index.php/vjbio/article/view/2676.