Cook County, Illinois vital certificates are a decent example of what I'm inquiring about. On a standard database with images for genealogical research, the images of these certificates are are not made available to the researcher. However, human transcriptions of them are available on these websites (websites like FamilySearch, Ancestry etc.).
Seeking pointers on how to build a full reference note for these types of transcriptions. My only copy of EE is 3rd edition revised. Thanks so much in advance!