The term Basmachi was often used in Soviet sources because of its pejorative meaning.

The dates given are recent radiometric dates and vary slightly from those used in other sources.

However, despite the wide circulation of the Enchiriadis treatises, this notation was not widely used in practical sources.

Holy Simeon is the usual term used in Catholic sources.

Some fission products (such as Cs-137) are used in medical and industrial radioactive sources.

His nickname was a nom de guerre, and is more commonly used for him, in Indian sources.

Prior to third edition, different game mechanics to describe the same idea were used in different sources.

This is the first attested use of Kikaigashima, which is often used in subsequent sources.

"The tongue of Kedar" is used in rabbinical sources as a name for the Arabic language.

Strontium-90 is a commonly used beta emitter used in industrial sources.