Reference

Cuong The Pham, Hang Thi An, Sebastian Herbst, Michael Bonkowski, Thomas Ziegler, Truong Quang Nguyen (2017): First report on the amphibian fauna of Ha Lang karst forest, Cao Bang Province, Vietnam – Bonn zoological Bulletin - früher Bonner Zoologische Beiträge. – 66: 37 - 53.