[c] Dion Cassius, History of Rome.
d A. Von Gutschmid, op. cit.
Chapter III. Early History of the Arabs
[b] Herodotus, The History of.
[c] Artemidorus, Geographica.
[d] Diodorus, The Historical Library.
[e] Pliny, Historia Naturalis.
[f] Ammianus Marcellinus, History of Rome.
[g] Eratosthenes, Chronographia.
[h] The Holy Bible, according to the authorised version of King James I.