| Strabo, Book XVI, Chapter 4, 22-24• Most of the information about south Arabia reported by Strabo probably came straight from the Roman expedition | Albert Jamme,inscription from Mahram Biqlis p |
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| 505, 508• Strabo described the custom in south Arabia which permitted women to have many husbands provided they were all brothers | Ibid p, 508• Strabo's close relationship with Aelius Gallus led him to attempt to justify his friend's defeat in his writings |
Philby,The background of Islam: Being a sketch of Arabian history in pre-Islamic timesWhitehead Morris Alexandira, Egypt ; 1st edition January 1 1947 p.
20| There is no direct mention in south Arabian inscriptions of the Roman expedition, a completely exceptional occurrence for a country that had never seen enemy troops on its soi• Huntington, IN: Our Sunday Visitor Publishing | Sharaffadin 42, Le Museon, 3-4, 1967, Pp |
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| Other news of which Strabo was also the source, typical of the Romans' opinion of their own cultural superiority appears on the curious systems of how south Arabia's regal power was transferred and on its inhabitants' unorthodox sexual habits | Frankfurter, David 1998 |