Answered By: Martyn Hurst
Last Updated: Jan 15, 2021     Views: 5

For information on when to use et al correctly for your in-text citations and reference lists please see the following guidance at Cite them right:

https://www-citethemrightonline-com.libproxy.ncl.ac.uk/Basics/setting-out-citations?SearchResult=Action#threeauthor

As a general rule, for up to 3 authors list them all, and for 4 or more use the lead author with et al.