Bacchetta, G., S. Brullo, and G. P. Giusso del Galdo. 2008. “CEPHALARIA BIGAZZII (DIPSACACEAE), A NEW RELIC SPECIES OF THE CEPHALARIA SQUAMIFLORA GROUP FROM SARDINIA”. Edinburgh Journal of Botany 65 (1): 145-55. https://doi.org/10.1017/S0960428608004964.