How to Upgrade RAM in MacBook Pro 17" 2011 16GB Install Tutorial - YouTube
16GB Memory Upgrade for MacBook Pro, iMac, and Mac mini
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
Apple MacBook Pro Early 2011 Crucial Memory Upgrade - YouTube
A-Tech 16GB (2x8GB) RAM for Apple MacBook Pro (Early/Late 2011), iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch), Mac Mini (Mid 2011) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit at Amazon.com
How To: MacBook Pro Late 2011 Memory Upgrade - 16GB (2 X 8GB) : 6 Steps - Instructables
8GB RAM Upgrade for 2011 MacBook Pro & Mac Mini Core i5 & i7 – $34 | OSXDaily
MacBook Pro 15" Unibody Early 2011 RAM Replacement - iFixit Repair Guide
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com