Harris, Bill (January 13, 2005). "The Shame of Trip Hawkins". Dubious Quality. Blogspot. Archived from the original on December 28, 2023. Retrieved February 6, 2024.
Alupului, Andrei (October 19, 2001). "Portal Runner (PS2)". GameSpy. GameSpy Industries. Archived from the original on December 15, 2004. Retrieved May 13, 2015.
Zdyrko, David (September 24, 2001). "Portal Runner (PS2)". IGN. Ziff Davis. Archived from the original on October 29, 2018. Retrieved February 6, 2024.
Iron Monkey (November 2001). "Portal Runner (PS2)"(PDF). GamePro. No. 158. IDG. p. 124. Archived from the original on February 3, 2005. Retrieved February 6, 2024.
Alupului, Andrei (October 19, 2001). "Portal Runner (PS2)". GameSpy. GameSpy Industries. Archived from the original on December 15, 2004. Retrieved May 13, 2015.
Zdyrko, David (September 24, 2001). "Portal Runner (PS2)". IGN. Ziff Davis. Archived from the original on October 29, 2018. Retrieved February 6, 2024.
Iron Monkey (November 2001). "Portal Runner (PS2)"(PDF). GamePro. No. 158. IDG. p. 124. Archived from the original on February 3, 2005. Retrieved February 6, 2024.
Harris, Bill (January 13, 2005). "The Shame of Trip Hawkins". Dubious Quality. Blogspot. Archived from the original on December 28, 2023. Retrieved February 6, 2024.