To these details may be added a very remarkable circumstance, which I received from another but not less authentic source.
In all of this he only made use of the authentic sources: writings and images by the believers themselves.
The most authentic sources suggest that the grave is near Damascus.
No written document nor any authentic sources are available to verify this account of its name.
He uses authentic sources while writing the books, which is why they are appreciated by scholars.
Girart is not described as being from Roussillon in authentic historical sources.
I have studied your past record - obtained from authentic sources.
Bava used to keep a personal diary, which has become an authentic source of history of his times.
This is one of the most authentic sources about the Gandapurs from the latter half of the 19th century.
Therefore, I have carefully collated the materials for such a work, from authentic sources, and here present them to the public.