Using a cell contents to construct a formula?

Hi, and thank you for your help.
I have run across this need many times...is there any way to use to contents of one cell, to construct a formula in another cell?

Here is my particular requirement. I have worksheets named January, February, March...etc.

On a separate Summary Worksheet, I reference the same cells on each of those sheets.

For example, I may have in 3 adjacent cells, =January!A1 =February!A1 =March!A1 and then in the next row: =January!A7 =February!A7 =March!A7 etc.

It would, obviously, be much easier to "build a formula" by creating a row with the months name and then reference that row in another formula. Is this possible? Or is there another way to accomplish this?

Thanks for your help.
Pradhan

Thank you...I am using it now, and it will save me hours of time.

Pradhan