When you cite websites, you no longer need to include the words “Retrieved from” before the URL unless you also need to include a retrieval date. You should now also include the website name, unless it’s the same as the author, and web page titles are italicized.
Tunca, D. (n. d.). Biography. The Chimamanda Ngozi Adichie Website. http://www.cerep.ulg.ac.be/adichie/cnabio.html
U.S. Department of Veterans Affairs. (2019). Depression. https://www.mentalhealth.va.gov/depression/index.asp
Print book citations no longer need to include the publisher location.
Adichie, C. N. (2014). Americanah. Anchor.
When you cite eBooks, you no longer need to indicate the type of eBook.
Adichie, C. N. (2017). We should all be feminists. Anchor. https://www.amazon.com/dp/B00L0F01NK/
Journal DOIs should be formatted as DOI URLs, instead of with the DOI: prefix
The rules around how many authors to include in a citation have been simplified. Now, up to twenty authors are included in reference list entries before you resort to using ellipses.
In-text citations with more than three authors can be shortened to the first author’s name followed by et al.
There is now guidance about citing sources that have gained in popularity since the publication of the previous manual, including social media posts, videos, and other electronic sources.