Lam, D. H., N. Q. Nguyen, A. D. Nguyen, and T. T. Nguyen. “A Checklist of Earthworms (Annelida: Oligochaeta) in Southeastern Vietnam”. 2021. Journal of Threatened Taxa, vol. 13, no. 2, Feb. 2021, pp. 17693-11, doi:10.11609/jott.6535.13.2.17693-17711.