Most likely refers to the World Atlas of Language Structures , a large database of structural properties of languages.
A or feature ID (though WALS features currently only go up to 144). 📘 Potential Sources WALS-Carol.&.Fernanda.(316)
These are likely the first names of authors (e.g., Carol Genetti and Fernanda Pratas , though this is a common pairing in specific Brazilian or Romance linguistic research). 316: This often refers to: A page number in a specific book or article. Most likely refers to the World Atlas of
Carol and Fernanda are common names in Brazilian linguistics. This may be a reference to a guide on Portuguese dialects or indigenous languages of Brazil documented in the WALS reference database. Carol Genetti and Fernanda Pratas