TS ISO 2108

TS ISO 2108 addresses the International Standard Book Number (ISBN) as a unique identifier for a separately available monographic publication or for a distinct product form of that publication. The standard focuses on the publication as a product, not on the intellectual content alone, so that different editions, formats, bindings, or publisher-specific manifestations can be distinguished reliably.

What the ISBN identifies

In general technical terms, an ISBN is a machine-readable and bibliographically useful identifier for monographic publications. It supports ordering, cataloguing, distribution, inventory control, and the exchange of publication data across systems. A key concept in ISBN practice is the distinction between a work and a product form: the same text may appear as a print book, an ebook, a separate chapter, or another publicly available manifestation, and each relevant product form may need its own identifier. The scope of this standard covers the structure of the ISBN, the rules for assigning and using it, the metadata associated with an ISBN allocation, and the administration of the ISBN system.

Where the standard applies

The standard applies to monographic publications, including separately available sections or chapters and certain related products, regardless of whether they are sold or provided free of charge. Its focus is the published object rather than the textual work itself, which matters in bibliographic practice because identifiers must track how a publication is issued and distributed. This is what allows libraries, publishers, booksellers, and data providers to refer to the same product form consistently.

In everyday publishing workflows, ISBNs help reduce ambiguity when titles exist in multiple editions or formats. They also support clean metadata exchange between publishing, retail, library, and rights-management systems. TS ISO 2108 provides the framework for using that identifier consistently at an international level.