Databases such as PsycInfo and WorldCat contain all the metadata which you need to cite an article or a book and to make bibliographies.
Import of references to zotero always happens from the "Save to Zotero" icon next to the URL.
If Zotero finds more references to import, look out for the folder icon:
If there is only one, the icon looks like this:
Zotero makes it easy to import references to your Zotero library.
Zotero is now importing the references, you have chosen.