None of the major academic sources for early Islamic history mention this tradition, even to refute it.

The folio is now lost and no identification of the document had been made by academic sources.

The following figures are not confirmed by serious academic sources or researchers, and are difficult to verify.

It is widely regarded as an authoritative academic source for ethnomusicology.

He has been described as "the go-to academic source on the genre of exploitation films."

Lab 1 has 25 computers programed for academic sources and general search on the Internet.

The report was prepared by demographic researchers using Federal statistical data and material from academic sources.

Most academic sources claim 20,000 deaths, although some put the death toll as low as 1000.

A collection of chapters by noted scenario planners failed to contain a single reference to an academic source!

Other academic sources have emphasised the site's educational value.