GamingMoz
- Data, release dates, box art, and a message board.
- http://www.gamingmoz.org/games/g399/playstation-portable/ape-escape-on-the-loose/

GameSpy PSP
- Review, by David Chapman: "Ape Escape: On the Loose does a good job of bringing the franchise to the PSP." [Score: 3.5 out of 10]
- http://ps2.gamespy.com/playstation-portable/ape-escape-psp/599354p1.html

1UP
- Preview, by Matt Leone: "While we got to try an Ape Escape game at the Tokyo Game Show, it wasn't the Ape Escape game we really wanted to play."
- http://www.1up.com/do/previewPage?cId=3137633&did=1

GameSpot
- Preview, by Ricardo Torres: "Based on what we played, Ape Escape PSP should capably fill what will likely be a gaping monkey-sized hole in the PSP's software."
- http://www.gamespot.com/psp/action/apeescape/preview_6115804.html

IGN PSP
- Preview, by Nix: "Even after playing the game, we're still left with a lot of questions as to how SCEA and SCEJ plan to pull this great one off on the PSP."
- http://psp.ign.com/articles/577/577661p1.html

GameFAQs
- Information and a message board.
- http://www.gamefaqs.com/portable/psp/data/920778.html