ENS EndNote Style file.
Save the file to your EndNote program folder. When you open your EndNote library, use the pull-down menu to choose ACS style.
CSL Citation Style file
CSL Citation Style file - same file as Zotero
What does et al. mean?
Often seen in reference lists for a variety of different styles, et al. is a common abbreviation from the Latin "et alia" (gender neutral), "et alii" (masculine), or "et aliae" (feminine). It means "and others", or "and all the rest".
When is it used?
Et al. is used with a very long list of authors to indicate that there are more contributors not specifically listed. While the ACS Style Guide generally recommends listing all authors (Chapter 14, page 291), some journals ask for only a certain number of listed authors before using et al., so check the requirements of the publication.
Where is the punctuation?
Since only "alia" is abbreviated, it gets the period. Putting the period after "et" is a common mistake.
This Grammarly post does an illustrated explanation.
