teoksittain

Teoksittain is a Finnish bibliographic term referring to the arrangement of bibliographic records by the underlying literary work rather than by the author or by edition. The form comes from teos meaning work and the suffix -ittain indicating a manner or method. In cataloging practice, teoksittain indicates that a single work with multiple manifestations—such as different editions, translations, or formats—may be grouped together under the entry for the work itself, with separate notes for each manifestation or a later cross-reference to translations or editions.

Its use is most common in Finnish-language library catalogs, bibliographies, and guidelines used by Finnish libraries or publishers. Teoksittain listings emphasize the continuity of the work across variants, helping readers or researchers identify all available manifestations of a given work in one place. This approach can complement, or in some cases contrast with, author-centered or edition-centered organization, which more strongly ties records to authors or to specific printings.

Advantages include improved discoverability of all editions of a work and easier tracking of a work's reception across languages. Limitations include potential complexity in cases where the relationship between a work and its variants is unclear, or where translations diverge significantly in content or recognition. See also bibliographic organization, author–title cataloging, edition-based indexing.