Yes, Warren, you can add more than one source for an event. If you already have one source for an individual's birth, open the EDIT INDIVIDUAL screen. Beside the entry for BIRTH you should see a small "S" (at the right hand side). Double click that and it will open the SOURCES screen for that source. Down the bottom of that screen, you will see NEW. Click that, and the screen with ALL your current Sources will be displayed. At the bottom of that screen is also a NEW button, click that and the EDIT SOURCE screen will open (blank) ready for the additional Source to be entered. Just type in the necessary details.