2 literature references for Parosela unifoliata (Robinson & Greenm.)Rose:

Author: McVaugh,R.
Year: 1987
Title:
Source: Flora Novo-Galiciana 5:1-786. Leguminosae
Author: Barneby,R.C.
Year: 1977
Title:
Source: Mem. New York Bot. Gard. 27:1-891 Daleae Imagines