Bibliography exports of items with a date field without a day (i.e. only month & year or only year) create "0" as output in the date part. See below for the difference between an export from Zotero and the ZotHero export:
Zotero Bibliography Export (Chicago Manual of Style 17th edition):
Bibliography exports of items with a date field without a day (i.e. only month & year or only year) create "0" as output in the date part. See below for the difference between an export from Zotero and the ZotHero export:
Zotero Bibliography Export (Chicago Manual of Style 17th edition):
ZotHero Bibliography Export (Chicago Manual of Style 17th edition, highlight mine):
Bibliography entry (BibTex)