MacBook Pro: How to remove or install memory - Apple Support
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
Now Here's a MacBook Pro That's Easy to Repair | WIRED
Apple MacBook Pro (13-inch and 15-inch, Mid 2012) | Memory RAM & SSD Upgrades | Crucial.com
4GB Memory for MacBook, MacBook Pro, iMac and Mac mini
How to Upgrade RAM on MacBook Pro, iMac & More | AVG
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
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 at Amazon.com
Macbook Pro RAM 4GB (2 x 2GB) 2009 2010 2011 2012 A1278 A1286 13 15" DDR3 10600s 649528762009 | eBay
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
MacBook Pro Memory Model 9.1 to 9.2 | Mid 2012 | 12GB | MacMemory.com
Can I replace this part only in Macbook Pro mid 2012? (RAM slot/holder) : r/macbookpro
16GB 2X8GB RAM Memory for Apple MacBook Pro 2.9GHz Intel Core i7 (13-inch DDR3) Mid-2012 Black Diamond Memory Module DDR3 SO-DIMM 204pin PC3-12800 1600MHz Upgrade - Walmart.com
Amazon.com: Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro(Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM : Electronics