↑van der Kuyl, Antoinette C.; Ballasina, Donato L. Ph.; Dekker, John T.; Maas, Jolanda; Willemsen, Ronald E. & Goudsmit, Jaap (2002). «Phylogenetic Relationships among the Species of the Genus Testudo (Testudines: Testudinidae) Inferred from Mitochondrial 12S rRNA Gene Sequences». Molecular Phylogenetics and Evolution. 22 (2): 174–183. doi:10.1006/mpev.2001.1052
