Apple MacBook Pro (13-inch, Mid 2009) Serial Number Lookup - AppleSN.info
MacBook Pro Upgrade Guide
4GB RAM Memory (PC3-8500) for Apple MacBook 13 inch A1278 Late 2008, A1342 Late 2009, A1342 Mid 2010. Apple MacBook Pro 13 inch A1278 Mid 2009, A1278 Mid 2010, A1286 - Late 2008
A-Tech for Apple 6GB Kit (1x2GB + 1x4GB) DDR2 667MHz PC2-5300 200-pin SODIMM for MacBook (Late 2007, Early 2008, Early 2009), MacBook Pro (Mid 2007, Early 2008), iMac (Mid 2007) - Memory RAM Upgrade at Amazon.com
MacBook Pro (13-inch, Mid 2009), Computers & Tech, Laptops & Notebooks on Carousell
Guía: Especial memoria RAM para Mac
Apple MacBook Pro 13 inch (06/09) - Notebookcheck.net External Reviews
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
MacBook Pro RAM Upgrades (Non-Retina) - OWC
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com
MacBook Pro: How to remove or install memory - Apple Support
MacBook Pro - Wikipedia
Upgrade RAM (8GB) on MacBook 13' Late 2009 and mid 2010 [Guide] - YouTube
MacBook Pro: How to remove or install memory - Apple Support
How to Upgrade MacBook Pro RAM (2009, 2010, 2011, 2012): EveryMac.com