Iwama, R.E., Oceguera-Figueroa, A., de Carle, D., Manglicmot, C., Erséus, C., Miles, N.M.-S., Siddall, M.E. and Kvist, S. 2019.

Broad geographic sampling and DNA barcoding do not support the presence of Helobdella stagnalis (Linnaeus, 1758) (Clitellata: Glossiphoniidae) in North America

. Zootaxa. 4671, 1 (Sep. 2019), 1–25. DOI:https://doi.org/10.11646/zootaxa.4671.1.1.