^Nordhoff, Sebastian; Hammarström, Harald; Forkel, Robert; Haspelmath, Martin, eds. (2013). "Greek Sign Language". Glottolog. Leipzig: Max Planck Institute for Evolutionary Anthropology.
^Eleni Efthimiou; Stavroula-Evita Fotinea. "An Environment for Deaf Accessibility to Educational Content"(PDF). Proceeding of the First International Conference in Information and Communication Technology & Accessibility April 12 – 14, 2007, Hammamet – TUNISIA. Tynisia: Mohamed JEMNI (editor). Retrieved 2010-03-18.
^a Sign-language names reflect the region of origin. Natural sign languages are not related to the spoken language used in the same region. For example, French Sign Language originated in France, but is not related to French.