Loiola, M. I. B., and L. S. Cordeiro. “<em>Erythroxylum sobraleanum</Em> (Erythroxylaceae): A New Species from Southeastern Brazil”.
Phytotaxa
, vol. 183, no. 1, Oct. 2014, pp. 56–60, doi:10.11646/phytotaxa.183.1.7.