«Greek». ethnologue.com. Ανακτήθηκε στις 23 Απριλίου 2018.
glottolog.org
Hammarström, Harald· Forkel, Robert· Haspelmath, Martin· Bank, Sebastian, επιμ. (2016). «{{{name}}}». Glottolog 2.7. Jena: Max Planck Institute for the Science of Human History.
Tom Mueller, Calabria Grecanica, article at madeinsouthitaly.com, accessed 31 March 2015: "In the last 30 years alone, five Greek-speaking villages have been abandoned. Though no one knows exactly how many native speakers remain, they cannot number much above 2,000."
