ISBN  -International Standard Book Number-  is a unique number assigned to and used to identify a particular edition of a book, used by publishers, libraries and booksellers. 

• If you publish with a commercial publisher, they will assign an ISBN to the book.
• To apply for an ISBN to publish the book privately, see the Nielsen UK ISBN Agency Website. 
• If you want to publish under the Dundalk Institute of Technology imprint, please contact the Library for an ISBN. 

ISSN - International Standard Serial Number - is a unique number assigned to a journal or magazine. Assigning an ISSN to a journal maximises its visibility and discoverability. 

If you publish a journal it’s a good idea to apply for an ISSN to:

The Irish ISSN Centre, 
National Library of Ireland,
Kildare Street, 
Dublin 2. 
Email: issnirl@nli.ie 
Web: www.nli.ie 
Phone: +353 (0)1 603 0351