Mid-2012 Macbook Pro 16GB RAM Upgrade How To - YouTube
Apple MacBook Pro with Retina Display (15-inch, 2014) review: Still the best higher-res laptop, but the competition is catching up - CNET
MacBook Pro 15" Retina Display Mid 2012 Teardown - iFixit
Apple MacBook Pro 15" Retina Mid 2012 Logic Board 2.6Ghz i7 8Gb Ram A1398 / DG | eBay
Apple MacBook Pro (15 inch) review: Apple MacBook Pro (15 inch, Summer 2012) - CNET
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
MacBook Pro 13" Retina 2.5GHz Logic Board, Late 2012 - 661-7006
16GB MacBook Pro RAM Upgrade (2011/2012/2013) - YouTube
MacBook Pro RAM Upgrades (Non-Retina) - OWC
Apple Mac Services – SimplyMac SG
16 GB RAM Upgrade on MacBook Pro 15" (mid 2012) NON Retina - YouTube