How to boot back into Android from Ubuntu Touch?

I just recently installed Ubuntu Touch on my Nexus 7 2013 tablet following the instructions from:

http://developer.ubuntu.com/start/ubuntu-for-devices/installing-ubuntu-for-devices/

I was successfully able to boot into Ubuntu, but now I am unsure how to boot back into android. I have tried restarting the tablet, but I am not given any option to select a different OS. I also do not have the Dual Boot back to Android application either.

Any assistance would be greatly appreciated!