Quotation marks and braces may both function as delimiters in key fields in bib-files. In WikiBook-LaTeX/Bibliography Management it is reasonably suggested that one uses quotation marks (" and ") instead of braces ({ and }). My TeXstudio latex editor uses { and } by default when inserting bibliography entries.
Is there a setting in TeXstudio to change the defaults to quotation marks for the insertions?
year = 2021). – Marijn May 18 '21 at 15:22