Indirect doesn't work when sheetname have spaces

Hello Experts,
What's the workaround so that the sheet names listed within column A could have spaces? This formula only works without any spaces in the name
=INDIRECT(A1&"!e30")

where A1 is Sheet1. but if change A1 to Sheet 1 and rename the sheet also, then it's a #REF! error.

Thanks in advance,
Ricky

=indirect("'"&a1&"'!e30")

Originally Posted by daddylonglegs

=indirect("'"&a1&"'!e30")

Thank-you Daddylonglegs and MRice,
Both worked nicely. I chose DLL's suggestion for the reference of cells within column A.

Thanks again,
Ricky