Analysis of information sources in references of the Wikipedia article "Письмова історія" in Ukrainian language version.
[T]he same document can be a primary or a secondary source depending on the particular analysis the historian is doing,
[T]he distinction is not a sharp one. Since a source is only a source in a specific historical context, the same source object can be both a primary or secondary source according to what it is used for.
[A] source may be primary or secondary, depending on what the researcher is looking for.
[A] source may be primary or secondary, depending on what the researcher is looking for.