Publishers frequently need to assign unique identifiers to their works, like the International Standard Serial Numbers (ISSN) and International Standard Book Numbers (ISBN). Although both are used for unique identification, they serve different purposes. This guide will clarify the main differences between ISSN and ISBN to help publishers use them effectively.

What is an ISSN?

An ISSN is a specific identifier assigned to periodical publications such as journals, magazines, newspapers, and online series. It plays a crucial role in the cataloguing and organising of serial publications within libraries and databases. ISSN is an eight-digit code, formatted as two sets of four digits separated by a hyphen. If you don't yet have an ISSN, you can obtain one by visiting the International ISSN Centre website and locating your regional ISSN agency.

An ISSN can be converted into an ISSN barcode (EAN-13 format) by appending "977" before the initial seven digits, adding a two-digit price code (often "00"), and recalculating the check digit (the 13th digit). Occasionally, a supplementary two-digit barcode is included to denote the issue number (e.g., "01" for issue 1).

What is an ISBN?

An ISBN is a 13-digit unique code designated for books and similar items such as e-books, audiobooks, and microforms. ISBNs are essential for tracking and managing the distribution of books within the marketplace. If you don't yet have an ISBN, you can acquire one by visiting the International ISBN Agency website and finding your local ISBN agency.

An ISBN barcode encodes the 13-digit ISBN into an EAN-13 barcode format. Typically, the ISBN is displayed above the barcode.

A significant difference between ISSN and ISBN is their allocation to different types of publications. ISSN is intended for serials issued periodically, whereas ISBN is specific to books and book-like items. Furthermore, ISSN is usually assigned to an entire series, while ISBNs can differentiate between various formats or editions of the same book.

In Summary

Publishers must correctly assign ISSN and ISBN to their works to avoid confusion and ensure accurate records.

In conclusion, both ISSN and ISBN are indispensable tools for publishers, aiding in the unique identification and categorisation of their works. Understanding the differences between ISSN and ISBN is essential for effectively managing and promoting publications. By following the guidance in this document, publishers can correctly assign these identifiers, thus improving the visibility and accessibility of their works to readers and other stakeholders.