Getting data from multiple sheets

I have a workbook created to keep track of financial information sorted monthly on separate sheets with a totals page. All the pages are set up the same as far as cell locations, on my totals page they are broke into the different categories and I am pulling info for each month to my totals page. I have set up the first month and wanted to know if there was a way to set up the others without typing each cell individually? I have attached the file to show what I am doing. Thanks in advance for any help