Waldman, Carl; Mason, Catherine (2006). Encyclopedia of European Peoples. Infobase Publishing. p. 205. ISBN1438129181. https://books.google.com/books?id=kfv6HKXErqAC. "According to ancient sources, the Dardani - variously grouped but probably Illyrians - lived west of present-day Belgrade in present-day Serbia and Montenegro in the third century B.C.E, their homeland in the ancient region of Thrace (and possibly there since the eight century B.C.E)."
A history of Macedonia Volume 5 of Hellenistic culture and society, Author: Robert Malcolm Errington, University of California Press, 1990 ISBN0-520-06319-8, ISBN978-0-520-06319-8, p. 185
A history of Macedonia Volume 5 of Hellenistic culture and society, Robert Malcolm Errington, University of California Press, 1990, ISBN0-520-06319-8, ISBN978-0-520-06319-8p. 174
Dictionary of Classical Antiquities (1898) "...whence it is said of the Dardanians, an Illyrian people, that they bathe only thrice in their lives—at birth, marriage, and after death."
Strabo,7.5, "The Dardanians are so utterly wild that they dig caves beneath their dung-hills and live there, but still they care for music, always making use of musical instruments, both flutes and stringed instruments"
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Strabo: Books 1‑7, 15‑17 in English translation, ed. H. L. Jones (1924), at LacusCurtius