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
How to Upgrade Your RAM to 8GB on Late 2008 Apple Macbook - YouTube
Differences Between Late 2008 and Mid-2009 MacBook Pro: EveryMac.com
MacBook Pro: How to remove or install memory - Apple Support
apple-history.com / MacBook (13-inch, Aluminum, Late 2008)
Mid 2008 unibody MacBook with 8gb ram, 400gb SSD, and MacOS 10.15 Catalina. I used DosDude1's patcher tool. : r/mac
15-inch MacBook Pro Late 2008 Memory Installation Video - YouTube
2008 MacBook Review: Better than a modern MacBook in many ways
A-Tech for Apple 2GB DDR3 1067MHz / 1066MHz PC3-8500 SODIMM Memory RAM Module for MacBook, MacBook Pro, iMac, Mac Mini - (Late 2008, Early 2009, Mid 2009, Late 2009, Mid 2010) Models at Amazon.com