There are a variety of sources you can use to locate potentially USEFUL secondary sources:
You want to make sure you have a useful secondary source before you use it.
Ask yourself the following questions!
The law changes frequently so you want to use the most current secondary source you can find. Make it a habit to check the date of a source and determine whether it has been recently updated before you use it.
Updating Print Sources
Single volumes
Multi-volume set
Updating Online Sources