N-Gage, Sony PSP, Nintendo DS. What Do We Really Think?
Nintendo DS vs. The Sony PSP - InfiniGEEK
PSP vs DS - Community | Facebook
Analysis: Portable Title Bout, PlayStation Portable vs. Nintendo DS - The Salt Lake Tribune
DS And PSP Game Prices Surge In Japan - WhatIfGaming
How New iPod Could (and Couldn't) Kill Nintendo DS & Sony PSP
Gamasutra - Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
Why the PSP is blatantly better than the DS – Destructoid
The life of a struggling CEE graduate from NTU: Sony PSP vs Nintendo DS / DS Lite
PSP vs DS - Posts | Facebook
DF Retro" DF Retro Extra: Sony PSP vs Nintendo DS at E3 2004! The Console War That Defined Mobile Gaming (TV Episode 2018) - IMDb
Cheat Code Central: DS vs. PSP
DS vs PSP Wirelessly - Infendo: Nintendo News, Review, Blog, and Podcast
NDS v.s. PSP v.s. iPhone - ModMyForums
Screenshot comparison - 3DS vs. DS, 3DS vs. PSP - Nintendo Everything
You Decide: Sony PSP or Nintendo 3DS? | HowStuffWorks
PlayStation Portable - Wikipedia
The graphics gap between the DS and PSP was much larger than the graphics gap between the 3DS and PSVita. : r/gaming
Sony PSP vs. Nintendo DS - IGN
DS vs. PSP – GamerSushi
