lähteisiin

Lähteisiin is the illative plural form of the Finnish noun lähde, meaning source. The illative case signals motion toward a destination, and in plural form it corresponds to “into the sources” or “to the sources.” In practice, lähteisiin is most commonly encountered in contexts related to references and citations, where it helps indicate which sources are being referred to or relied upon.

In academic and journalistic Finnish, the phrase lähteisiin is used with verbs such as viitata or tukeutua to describe how information is sourced. Common expressions include lähteisiin viitataan (sources are cited) and lähteisiin tukeudutaan (one relies on the sources). Lähteisiin can also appear in more general directional senses when discussing moving toward multiple physical sources or locations, though such usage is less frequent outside literal descriptions.

Morphologically, lähteisiin contrasts with the singular form lähteeseen (into the source) and the nominative lähde/ lähteet (the source/ sources). Correct use depends on number and case: illative plural for multiple sources, and other cases for related grammatical functions.

In writing, accurate referencing typically involves distinguishing between primary and secondary sources and ensuring that all sources cited in the text appear in the works cited or reference list. Lähteisiin thus functions as a key term in discussions of sourcing, citation practices, and the authority of information. See also lähde, viitata, lähdeluettelo, viitteet.