Crash Bandicoot Gems walkthrough: All green, white, red, blue, purple, yellow coloured Gem locations, Key locations, Secret Levels and how to 100% each game | Eurogamer.net
Hang 'Em High | Crash Bandicoot 3 | Levels - Crash Bandicoot N. Sane Trilogy Game Guide | gamepressure.com
Gems - Crash Bandicoot: Warped Guide - IGN
Crash Bandicoot 3 - Hang' Em High (Yellow Gem) - YouTube
Crash 3 Warped - Yellow Gem in Hang 'Em High - Crash Brandicoot N. Sane Trilogy - YouTube