Software >> Applications >> Microsoft Office >> Excel >>  Find cells with links to other data sources

Find external references that are used in cells
  1. Close all source workbooks, and then open the destination workbook.
  2. On the Home tab, in the Editing group, click Find & Select, and then click Find. ...
  3. Click Options.
  4. In the Find what box, enter [.
  5. In the Within box, click Workbook.
  6. In the Look in box, click Formulas.