Middleton, D., Atkins, H., Truong, L.H., Nishii, K. & Möller, M. (2014)

Billolivia, a new genus of Gesneriaceae from Vietnam with five new species

. Phytotaxa 161 (4): 241–269. https://doi.org/10.11646/phytotaxa.161.4.1