Khac, Hoang Ngoc, Do Van Nhuong, Nguyen Thi Cay, and Tran Thap Nhat. “Landsnails (Gastropoda) in Tam Dao National Park, Vinh Phuc Province, Vietnam”. Academia Journal of Biology 34, no. 3 (October 2, 2012): 317–322. Accessed January 29, 2022. https://vjs.ac.vn/index.php/vjbio/article/view/2462.