It's important to make sure you are on the right screen for what you want to be doing.
Use if you want to search by key works, fine a specific article or articles written by a specific author. (This is the search page that comes up when you first arrive in Web of Science.)
Cited Reference Searches:
Use if you want to see who has cited a published book or article. Cited reference searching allows you to take research forwards by seeing who else cited the article you are using.
Use this screen to seach by topic, author, publication name, etc.
Use this screen when looking for who has cited whom.