When you see “Source” anywhere in the FI-Admin system, it means you are creating or editing data for a book, non-conventional document, thesis, dissertation, or entire periodical (periodical series). And when you see “Analytical”, you are creating or editing data for a part of a document at a monographic level, such as a chapter, section of a book, thesis or non-conventional document, or the article of a periodical if describing a periodical.