Make Array Reference Cells On Another Worksheet Of Active Workbook

My company has complicated time sheets because we have several tasks that are billed differently to different people. Once a month we have to sit down and compile everything from several forms and so forth. I have created a worksheet that pulls all the numbers together so that they can simply be copied and pasted into our reports. The hope was to simply copy this worksheet into a time sheet workbook and it will pull out all of the correct numbers. Although all the time sheet workbooks are set up the same way, whenever I copy the file into another time sheet workbook the program keeps its references from the workbook it was in. Make sense? is there a formula that I can insert into an array to tell it to pull the information from the worksheet with the same name, but in the active workbook?

here is one of the equations I am working with:

{=TRANSPOSE('1st week'!A10:L48)}

so it would look something like this maybe

{=TRANSPOSE('[active workbook]1st week'!A10:L48)} but this doesn't work of course.