Skip to main content

Trinity College Dublin, The University of Dublin

Trinity Menu Trinity Search

You are here Content Management & Open Scholarship > ISBN/ISSN


International Standard Book Numbers (ISBNs)

An ISBN is a 13-digit code which identifies one title or edition of a title from one specific publisher and is unique to that title or edition.

ISBNs for British and Irish publishers are issued (for a charge) by the UK International Standard Book Numbering Agency.

An ISBN for a print publication produced by any department within Trinity College Dublin may be obtained (for free) from the Library by contacting

International Standard Serial Numbers (ISSNs)

An ISSN is an 8-digit code which identifies a journal or other serial publication, i.e., a publication issued in successive parts, having a common title, and intended to be continued indefinitely.

ISSNs in Ireland are issued by the Irish ISSN Centre in the National Library of Ireland.

ISSNs in the United Kingdom are issued by the ISSN UK Centre in the British Library.