Bibliographic records for secondary sources pertaining to Ottoman music are also included in the CMO Source Catalogue. These bibliographic records are saved in the Source Catalogue as a "cmo_mods" entity and are automatically assigned a number once saved.

Adding bibliographic sources to the source catalog can be done by choosing 'Bibliography' from the CMO Content Generator page. To access the CMO Content Generator page, click on the 'Editor' tab on the left side of the CMO homepage, and choose 'Create new catalogue entry'.  Once you have selected 'Bibliography' from the CMO Content Generator, a new page will open where all metadata for the bibliographic record can be entered.

The primary metadata fields for bibliographic records are as follows:

• Title
• Subtitle
• Author
• CMO Identifier
• Document Type
• Publisher
• Place of Publication
• Date

Additional metadata fields can be added to designate the publication series, and information pertaining to the work in which the bibliographic source appears in the case of a book chapter, volume, or article in an edited work.