Source: Valdés, B. & Raab-Straube, E. von (2011+): Boraginaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
A.Bigazzi, M. & Selvi, F. 2000: Anchusa samothracica (Boraginaceae), a new species from the island of Samothraki, Greece. – Nordic Journal of Botany 19: 141-148
