If the reference cannot be imported from a database, for example a website or book, then the information can be manually added into EndNote.
Manually Adding a New Reference
1. On the EndNote toolbar, select References > New Reference, or Ctrl+N (Windows) Cmd+N (Mac), or New Reference button
2. Select the Reference Type from the drop-down menu at the top (the default type is journal article)
3. Use the mouse or Tab to select the desired fields and enter the appropriate information
4. Close Reference by clicking on the small x in the top right corner
Here is a short video on adding a reference to EndNote
Below are a few tips, but for a complete desciription please see the "Entering References" section of the EndNote User Manual
Tips for the Author/Editor Fields
Tips for the Edition Field
The text of the Edition field is not modified by EndNote for your bibliographies, so be sure to enter "1st," "2nd," etc for this field
Create your own label to make articles easier to find.
Other Fields to Consider