Financial Results Briefing for Fiscal Year Ended March 2011
Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
RIP, PSP: What the Vita can learn from Sony's late, great handheld - CNET
The Reasons Why The PSP Was Ahead Of Its Time
Wii, XBox, PS3, Nintendo DS, Gameboy Advance, PSP, iPhone, iPad: global market share and sales comparison | Got Schwartz?
PS Vita vs 3DS. Is The 3DS Winning The Handheld War? - Wololo.net
Nintendo 3DS Reaches 5 Million In Japan, Breaks Record - Siliconera
PSP VS DS Graphics Comparison | N4G
Looking back at 2009 console sales and ahead to 2010 trends | Ars Technica
The annual sales number of PSP overtakes Nintendo DS for the first time since its release at the top of all game machines - GIGAZINE
PlayStation Portable - Wikipedia
Analysis: PSP Go To Face 'Slow Death At Retail' In U.S.?
Sony PSP vs. Nintendo DS - IGN
Who won? First-week sales of PS Vita vs. PSP vs. 3DS vs. DS (infographic) | VentureBeat
Sony PSP Versus Nintendo DS - The Sales Showdown - Pure Nintendo
Comparison between DS and PSP in Japan | Download Table
NPD Seventh generation | Video Game Sales Wiki | Fandom
Game Consoles – November 2007 NPD Sales Figure Analysis « Blog Archive « DVDGuy's Blog @ Digital Digest
Sony figures show PSP sales falling - but more sold than you may expect | Technology | The Guardian
Graph-Age: Worldwide NDS & PSP cumulative monthly sales & shipments by region! | Page 4 | NeoGAF
Switch vs DS Sales Comparison – DS Lead Grows May 2020
The first 2 years: PSP has sold better in the US than PS1, DS, more | Engadget
Semi-Annual Financial Results Briefing for Fiscal Year Ending March 2012
Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
PSP lifetime unit sales by region 2022 | Statista
PS Vita being outsold by the PSP in Europe too | eTeknix
Games: Nintendo – the winner takes it all – eurotechnology.com
