Notes qualify and amplify the description in the other areas and can deal with any aspect of a resource. Notes may also give the bibliographic history of the resource and indicate relationships to other resources. In making reference to another resource in a note, enough information must be given to identify the
resource. This may vary depending on the resource and the context of the note. For continuing resources,
the citation may consist of the key title and ISSN. In other cases, it may consist of the title proper along
with a statement of responsibility or other bibliographic details. Two or more notes may be combined into a single note when considered appropriate by the cataloguing agency.