The International Standard Book Number (ISBN) is a unique identifier for books. An ISBN is not mandatory, and does not provide copyright on a work. It used internationally across the book trade and library sector.

Apply for an ISBN

ISBN Agency
Thorpe-Bowker
Level One, 607 St Kilda Road 
(PO Box 6509, St Kilda Road Central VIC 8008)
Melbourne Vic, 3004

Tel: +61 3 8517 8349
Fax: +61 3 8517 8368
Email: myidentifiers@thorpe.com.au
Internet: https://www.myidentifiers.com.au/

Further information is available at Thorpe-Bowker's My Identifiers homepage.