Books for Level II Clarification

For Level II, the website indicates three texts (in addition to the always popular CFA Standards of Practice Handbook): The books are “Advanced Core Topics” “Integrated Topics” & “Current & Integrated Topics” Could someone clarify for me, is the “Current and Integrated Topics” book a combination of the first two? Are we required to purchase all three or is this overkill? thanks

They are three different books. Either you purchase them directly or get a summary version if you use a third party provider (Schweser or Uppermark)