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 PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
DIY MacBook Pro Ram Upgrade (16GB) Blazing Fast - YouTube
Apple MacBook Pro 13" Retina 3.0 GHz Core i7, 16GB RAM, 512GB SSD 2014 | eBay
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 at Amazon.com
MacBook Pro (Retina, 13-inch, Mid 2014) - Technical Specifications
Amazon.com: Mid-2014 Apple MacBook Pro with 2.5GHz Intel Core i7 (15-inch, 16GB RAM, 512GB SSD Storage) (Renewed) : Electronics