A-Tech 16GB Kit (2x8GB) DDR3 1066MHz / 1067MHz PC3-8500 SODIMM RAM for Apple MacBook (13 inch, Mid 2010), MacBook Pro (13 inch, Mid 2010), iMac (27 inch, Late 2009), Mac Mini (Mid 2010) at Amazon.com
MacBook Pro: How to remove or install memory - Apple Support
OFFTEK 4GB Replacement Memory RAM Upgrade for Apple MacBook Pro 2.53GHz Intel Core 2 Duo (15-inch) (DDR3) (Mid-2009) (DDR3-8500) Laptop Memory at Amazon.com