An International Standard Serial Number (ISSN) is an 8-digit code that uniquely identifies a serial or other continuing resource (periodical, magazine, journal, newspaper, annual, monographic series, website or database). Canadian publishers are not obligated to obtain ISSNs, but Government of Canada publishers are required to use them. ISSN Canada provides ISSNs for free.
Publications that may receive an ISSN, how many are needed, apply for an ISSN
Advantages, the parts of an ISSN, when to get a new ISSN, definitions
Display ISSNs and information about your publications
Contact ISSN Canada, and learn about its work within the international network