- ↑ Cocker, Guy (July 15, 2008). "E3 2008: Resistance Retribution Impressions". GameSpot. CBS Interactive. Retrieved February 27, 2018.
- ↑ Makuch, Eddie (February 11, 2015). "Another Resistance Game Going Offline". GameSpot. CBS Interactive. Retrieved February 12, 2015.
- ↑ Garvin, John (October 9, 2008). "Resistance: Retribution & Resistance 2 Interoperability and Then Some". PlayStation Blog. Sony Computer Entertainment. Retrieved February 12, 2015.
- ↑ Tsang, Alan (October 9, 2008). "Infect your PSP with Resistance 2 and Retribution connectivity". Engadget (Joystiq). Oath Inc. Archived from the original on July 8, 2010. Retrieved February 27, 2018.