O'Brien, Chris; Wilson, Billy (March 28, 2000). "Ask Sweeney, part 2". Voodoo Extreme. Archived from the original on August 15, 2000. Retrieved July 20, 2019.
Wilson, Billy; O'Brien, Chris; Heir, Manveer; Howarth, Robert (مه 25, 2000). "Talkin' nasty with Epic's Tim Sweeney". Voodoo Extreme. Archived from the original on June 20, 2000. Retrieved August 13, 2017.
O'Brien, Chris; Wilson, Billy (March 28, 2000). "Ask Sweeney, part 2". Voodoo Extreme. Archived from the original on August 15, 2000. Retrieved July 20, 2019.
Wilson, Billy; O'Brien, Chris; Heir, Manveer; Howarth, Robert (مه 25, 2000). "Talkin' nasty with Epic's Tim Sweeney". Voodoo Extreme. Archived from the original on June 20, 2000. Retrieved August 13, 2017.