MacBook Pro: How to remove or install memory - Apple Support
MacBook Pro Memory Upgrade Kits (2008, 2009 and 2010)
OFFTEK 8GB Memoria RAM de Repuesto para Apple MacBook Pro 2.8GHz Intel Core i7 - (13-Inch) (DDR3) (Late-2011) (DDR3-10600) Memoria para portátil : Amazon.es: Informática
Add more RAM to your MacBook Pro (photos) - CNET
Upgrading RAM in Your MacBook Pro 13" or 15" : 19 Steps (with Pictures) - Instructables
MacBook Pro: How to remove or install memory - Apple Support
How to upgrade the RAM on your 13-inch MacBook Pro
Potencia tu Mac - Los slot de memoria Ram en un Macbook... | Facebook