A-Tech 8GB RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz SODIMM PC3-12800 204-Pin SO-DIMM Memory Upgrade at Amazon.com
MacBook Pro 15" Retina Display Mid 2012 Teardown - iFixit
OFFTEK 2GB Replacement Memory RAM Upgrade for Apple MacBook Pro 2.5GHz Intel Core i5 - (13-inch) (DDR3) (Mid-2012) (DDR3-12800) Laptop Memory at Amazon.com
NEMIX RAM 16GB Kit (2x8GB Upgrade) DDR3-1600 SODIMM PC3-12800 for Apple MacBook Pro Mid 2012 / iMac Late 2012 / iMac 2013, Late 2014, Mid 2015, Mac Mini Late 2012 at Amazon.com
16 GB RAM Upgrade on MacBook Pro 15" (mid 2012) NON Retina - YouTube
VRAM for Macbook PRO MID-2012 - Apple Community
Memory RAM Upgrade for Apple MacBook Pro 13-inch Mid 2012 4GB DDR3 SODIMM | eBay
16GB MacBook Pro RAM Upgrade (2011/2012/2013) - YouTube
CMS 16GB (2X8GB) DDR3 12800 1600MHz Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® MacBook Pro Core I5 2.5 13" Mid-2012 - A7 at Amazon.com
How to make your MacBook Pro faster – upgrading a MacBook Pro mid-2012 to SSD and more RAM memory - Andy the webdeveloper