Martínez-Azorín, M., Pinter, M., Crespo, M. B., Slade, J., Deutsch, G., & Wetschnig, W. (2015).

Clarification of Massonia echinata and some other frequently misunderstood Massonia species (Asparagaceae, Scilloideae), with the description of M. pseudoechinata and M. roggeveldensis

. Phytotaxa, 239(2), 101–129. https://doi.org/10.11646/phytotaxa.239.2.1