ONIX for Books 3.0 and 2.1
ONIX for Books 3.0 and 2.1 can be used to deposit e-books, audio books and printed music.
Metadata documentation for the format ONIX 3.0, version 1.0, dated 29/09/2021(only available in German)
Sample files with XML-data in “ONIX for Books 3.0”
Metadata documentation for the format ONIX 2.1, version 2.2, dated 31/05/2023 (only available in German)
Sample files with XML-data in “ONIX for Books 2.1”
Schemes and further information can be found at http://www.editeur.org.