This means:
* Last names of authors come first if the source is authored by a person or group.
* Titles of works come first if the source is not authored by a person or group (like a website, government document, or book with no author listed).
Here's an example:
1. Smith, John. *The History of the World.* Penguin Books, 2010.
2. United States Department of Agriculture. *Food Safety and Inspection Service.* USDA, 2023.
3. "The History of the United States." *The American Encyclopedia,* 2022.
In this example, the entry for Smith would come first, followed by the USDA entry, and then the encyclopedia entry.
Remember to follow the specific citation style guide you're using (MLA, APA, Chicago, etc.) for the exact formatting of your entries.