| Hastings' Dictionary of the Bible, P | Strenziak, Die Genealogle der Nordaraber nach Ibn Al-Kalbi, Koln-1953 , Vol |
|---|---|
| Stein, "Ancient South Arabian" in R | Jawwad Ali, The Detailed History of Arabs before Islam 1993 , University of Baghdad, Vol |
Woodard, The Cambridge Encyclopedia Of The World's Ancient Languages, 2004, Cambridge University Press: Cambridge, p•.
18.
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