Apple Doubles the Price of RAM Upgrade on Entry-Level 13-Inch MacBook Pro - MacRumors
Mid-2012 Macbook Pro 16GB RAM Upgrade How To - YouTube
A-Tech 16GB Kit (2x8GB) RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com