One of the weaknesses of the journal is an insufficient reliance on sources written in languages other than Hebrew.

However most of these events are known only from a single source, usually written by a member of the clergy from the relevant church.

(7) Classwork using primary sources written documents of various kinds; old photographs or engravings; other sources.

The earliest (documented) Christian knowledge of Muhammad stems from Byzantine sources, written shortly after Muhammad's death in 632.

It is impossible to verify due to the available historical sources being written long after the battle, and its historical accuracy is in doubt.

A source written in 612 AD mentions Buddhist monks arguing over the revenues gained from watermills.

In contemporary Byzantine sources, written in Greek, the country was also known as "Western Tourkia".

Parisot claimed that it was from Spanish sources written in Louisiana.

His name appears in sources sometimes written as Yong Lee-Ya.

However Ingibiorg is never mentioned by primary sources written by Scottish and English chroniclers.