Khac, H. N., D. V. Nhuong, N. T. Cay, and T. T. Nhat. “Landsnails (Gastropoda) in Tam Dao National Park, Vinh Phuc Province, Vietnam”. Academia Journal of Biology, vol. 34, no. 3, Oct. 2012, pp. 317-22, doi:10.15625/0866-7160/v34n3.2462.