MacBook Pro: How to remove or install memory - Apple Support
Timetec Hynix IC 16GB KIT(2x8GB) Compatible for Apple DDR3 PC3-8500 1067MHz/1066MHz Upgrade for MacBook 13'' Mid 2010, MacBook Pro 13'' Mid 2010, iMac 27''Late 2009, Mac Mini Mid 2010(16GB KIT(2x8GB)) - Newegg.com
2GB DDR2 800MHz RAM Memory Upgrade for Apple MacBook 13-inch (Mid 2009) (PARTS-QUICK) - Walmart.com
A-Tech for Apple 4GB Kit (2X 2GB) DDR3 1067MHz / 1066MHz PC3-8500 SODIMM Memory RAM
How to upgrade MacBook Pro RAM (2009-2012) - YouTube