Thanh Binh, Tran Thi, and Nguyen Thi Ha. “The Species Composition and Density of Earthwarms in Some Landscapes in the Northern Vietnam”. Academia Journal of Biology 36, no. 3 (March 25, 2015): 295–300. Accessed September 30, 2025. https://ajb.vast.vn/vjbio/article/view/5993.