Subtitle
A secondary or explanatory title that follows the main title. Subtitles often add details or strengthen the meaning of the main title.

Enter the subtitle in mixed case as it appears on the title page of the book.

Do not include additional information such as order number, edition number, volume number, etc., in the subtitle.

Enter the subtitle in this field, rather than following the title in the Title field.

Example: "The History of Madison County: 200 Years of Agriculture", the Title is "The History of Madison County" and the Subtitle is "200 Years of Agriculture".