Sometimes, a reference does not carry a year. Especially with electronic resources this is often the case. I would like to suggest to improve the Style Editor for better handling of references with no year. Right now, the text defined before and after the year is used regardless whether or not a year is given. Also, the in-text-quotation shows a blank instead of a year.
Thanks, Volker
For all fields
For all fields exceplt authors and year, the before and after text will be be added when field is empty. For missing authors, the style may specify how to deal with this like use "anonymous", etc. For missing year, the style can specify using "Date freeform" data.