John, D.M., Wynne, M.J. and Tsarenko, P.M. 2014.

Reinstatement of the genus Willea Schmidle 1900 for Crucigeniella Lemmermann 1900 nom. illeg. (Chlorellales, Trebouxiophyceae, Chlorophyta)

. Phytotaxa. 167, 2 (May 2014), 212–214. DOI:https://doi.org/10.11646/phytotaxa.167.2.10.