It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
In order to cite most resources, it is important to include a note and a bibliography entry. However, you will find throughout the examples that sometimes only a note is necessary for certain specified sources. In addition, Chicago outlines various ways to abbreviate notes to save time:
The first note must always be a full note, but subsequent ones should be abbreviated.
The basic structure for an abbreviate note includes: author's last name, the main title (shortened if more than four words), and the page number or other identifying information if applicable.
Use Ibid. or Ibid. followed by a comma and the page number if the citation is the same as the one immediately preceding it.
For information on how to write abbreviated notes see 14.24-14.31 in the Chicago Manual of Style 16th Edition.