book-part-id-type Type of Book Part Identifier

Type of identifier for a book part (e.g., chapter), or the organization or system that defined the identifier.
OPTIONAL on element: <book-part-id>
Value Meaning
Text, numbers, or special characters The type of identifier “doi” or name or type of organization that created the identifier “publisher-id”.
Restriction @book-part-id-type is an optional attribute; there is no default.
Tagged Sample

A DOI as an identifier for a specific segment of a book

 <book-part-id book-part-id-type="doi">