Display attribute "source" with attribute "label"
For displaying the reference of an information use "label" instead of "title" of target.
For displaying the xml attribute "source" use the attribute "label".
Example:
https://corpus-musicae-ottomanicae.de/receive/cmo_person_00000325
Names have a reference: <mei:name type="MA" source="cmo_mods_00000021" label="MA/III, p. 710">Âmâ Corci</mei:name>
Correctly Displayed as
MA Âmâ Corci [MA/III, p. 710]
But other elements have also "source" attributes:
Date: <mei:date calendar="gregorian" type="death" notbefore="1785" notafter="1825" source="cmo_mods_00000009" label="TMAS/I, p. 193">1805?</mei:date>
Annotation: <mei:annot source="cmo_mods_00000009" label="TMAS/I, pp. 193–4">
Displayed as:
1805? (gregorian; see Türk mûsikîsi akademik klasik Türk san'at mûsikîsi'nin ansiklopedik... - TMAS/I, p. 193)
These hould be displayed the same way as names (with value of "label" in Brackets).
1805? (gregorian) [TMAS/I, p. 193]