Source: Valdés, B. & Raab-Straube, E. von (2011+): Boraginaceae. – In: Euro+Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
Alkanna sandwithii Rech. f.in Ann. Naturhist. Mus. Wien 68: 212. 1965
A.Greuter, W., Burdet, H. M. & Long, G. 1984: Med-Checklist 1. – Genève & Berlin
B.Demiri, M. 1983: Flora ekskursioniste e shqipërisë. – Tiranë: Shtëpia Botuese e Librit Shkollor
C.Tutin, T. G., Heywood, V. H., Burges, N. A., Valentine, D. H., Walters, S. M. & Webb, D. A. 1964–1980: Flora europaea 1-5. – Cambridge: Cambridge University Press
