I'm creating a workbook regarding the traveling expenses of my teammates.
Every sheet and tab have their name and I'm summing the in summary sheet in
the workbook. Then I realised that I've forgot to add another one sheet into
the formula in summary. Here is the example:

Jofri!F8+'Ewe Chean'!F8+Yanti!F8+Huda!F8+'Jee Onn'!F8+'Chee
Keet'!F8+Jessica!F8+Ellis!F8+JJ!F8+Syahira!F8+Ili!F8

So how do I add the missing name / sheet to this formula. There are a lot of
these formulas in the summary sheet.

Thank You