MacBook Pro: How to remove or install memory - Apple Support
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Early/Mid/Late Mac Book Pro(2011- 2012), iMac(2011- 2015), Mac Mini(2011- 2012) MAC RAM at Amazon.com
Teardown of Mid-2012 MacBook Air Reveals Tweaked SSD Connector - MacRumors
Memory RAM Upgrades for MacBook Pro (2012 - Late 2016)
How to make your MacBook Pro faster – upgrading a MacBook Pro mid-2012 to SSD and more RAM memory - Andy the webdeveloper
Mid-2012 Macbook Pro 16GB RAM Upgrade How To - YouTube
OWC 16GB (2x8GB) PC12800 DDR3L 1600MHz SO-DIMMs Memory Ram Upgrade Compatible with 2011-2015 iMac, 2011-12 Mac Mini, and 2011-2012 MacBook Pro (Non-Retina Display) Models (OWC1600DDR3S16P) at Amazon.com
Mid-2012 Macbook Pro 16GB RAM Upgrade How To - YouTube
Memory RAM Upgrades for MacBook Pro (2012 - Late 2016)
How to make your MacBook Pro faster – upgrading a MacBook Pro mid-2012 to SSD and more RAM memory - Andy the webdeveloper
Adamanta 16GB (2x8GB) Apple Memory Upgrade DDR3L 1600MHz SODIMM Compatible for iMac (Mid 2011, Late 2012, Early/Late 2013, Late 2014, Mid 2015), MacBook Pro (Early/Late 2011, Mid 2012), Mac Mini RAM at Amazon.com
MacBook Pro Memory Upgrade - How-tos and DIY - Corsair Community