Internal citations provide the author and page number of the source, while the Works Cited provides all publication information.
Explanation:
The Works Cited page includes all of the necessary information about the book, website, etc... that you are using. This includes things like a publication date or a name of a book or article. In comparison, the internal citations are used to help the reader locate a source on the Works Cited page, by providing the author. From there, the page number can be used to find the exact location.
