I am new to Microsoft.Office.Interop.Excel Marshal.ReleaseComObject

Hi

I am new to Microsoft.Office.Interop.Excel

if I create following instance of types.

Workbooks books = Excel.WorkBooks;

Workbook book = books[1];

Sheets sheets = book.WorkSheet;

Worksheet ws = sheets[1];

how to release all objects?

Can I only use:

Marshal.ReleaseComObject(books);

Or

Marshal.ReleaseComObject(sheets);

Marshal.ReleaseComObject(books);