macbook pro - Can I upgrade RAM on late 2013 retina Mac Book Pro? - Ask Different
MacBook Pro: How to remove or install memory - Apple Support
Upgrade Your Macbook Pro (SSD Upgrade, RAM Upgrade, Optical Drive Bay Adapter) - YouTube
What is the maximum RAM for a MacBook Pro? - Quora
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com
Is It Worth It to Upgrade RAM on a Macbook Pro? Expert Tips