List of references - Official TF2 Wiki
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Engineer Update - Official TF2 Wiki
Pyro, Team Fortress Wiki
Horseless Headless Horsemann - Official TF2 Wiki
The Orange Box - Wikipedia
List of references (Soldier) - Official TF2 Wiki
Item drop system - Official TF2 Wiki
Doctor's Defibrillators - Official TF2 Wiki
List of Super Smash Bros. references in other franchises
Team Fortress 2 / Shout Out - TV Tropes
Administrator (Team Fortress 2), Villains Wiki
Friday Night Fortress: Vs Mann Co/Characters
List of references (Sniper) - Official TF2 Wiki
