Guijarro Ruano & del Barrio Vega 2019, p. 314 Guijarro Ruano, Paloma; del Barrio Vega, Maria Luisa (2019). "Greek lexicography and the designation of helotic-like populations in Ancient Greece: The history of three compounds". In Giannakis, Georgios K.; Charalambakis, Christoforos; Montanari, Franco; Rengakos, Antonios (eds.). Studies in Greek Lexicography. Trends in Classics - Supplementary Volumes. Vol. 72. Walter de Gruyter GmbH & Co KG. pp. 309–329. ISBN9783110622744.
Polomé 1983, p. 537: "The old kingdom of Illyria, south of Lissos, covered the territory of several tribes who shared a common language, apparently of Indo-European stock: the Taulantii, on the coast, south of Dyrrachium; the Parthini, north of this town; the Dassaretae, inland, near Lake Lychnidos and in the Drin valley; north of them were the Penestae; in the mountains, an older group, the Enchelei, lingered on." [footnote 84:] "In the oldest sources, the term 'Illyrian' appears to be restricted to the tribes of the Illyricum regnum (PAPAZOGLU, 1965). Linguistically, it can only legitimately be applied to the southeastern part of the expanded Roman Illyricum; the Delmatae and the Pannonii to the northwest mus have constituted an ethnically and linguistically distinct group (KATIČIĆ, 1968: 367-8)." Polomé, Edgar C. (1983). "The Linguistic Situation in the Western Provinces of the Roman Empire". In Wolfgang Haase (ed.). Sprache und Literatur (Sprachen und Schriften [Forts.]). Walter de Gruyter. pp. 509–553. ISBN3110847035.
Šašel Kos 2002, p. 117: "The Illyrian peoples, mentioned in the sources in which the events concerning the Illyrian kingdom are narrated – to name the most outstanding – are the Taulantii, Atintani, Parthini, Enchelei, Penestae, Dassaretii, Ardiaei, Labeates, and the Daorsi. All of these peoples were conceivably more or less closely related in terms of culture, institutions and language. Many of them may have had their own kings, some of whom attained great power and actively took part in the struggle for power in the Hellenistic world. The name “Illyrian” must have carried enough prestige at the time of the rise of the Ardiaean dynasty within the Illyrian kingdom that it was imposed at a later date, when the Romans conquered Illyria and the rest of the Balkans, as the official name of the future provinces of Dalmatia and Pannonia." Šašel Kos, Marjeta (2002). "Pyrrhus and Illyrian Kingdom(s?)". Greek Influence Along the East Adriatic Coast. Knjiga Mediterana. 26: 101–119. ISBN9531631549.
Haebler 2002, p. 475: "To be cautious, only that language, which was spread along the south-eastern Adriatic coast northward and southward from Dyrrhachium (today Durrës) and inland to Lake Lychnidos (today Ohrid) in the settlement area of the Illyrian tribes of the Parthini, Taulanti, Dassaretae and Penestae, must be considered as Illyrian at present." Haebler, Claus (2002). "Palaeo-Balkanic languages". In Hubert, Cancik; Schneider, Helmuth; Salazar, Christine F.; Orton, David E. (eds.). Brill's New Pauly: Ark–Kas. Brill's New Pauly. Vol. 2. Brill. ISBN9004122656.
