NPD Seventh generation | Video Game Sales Wiki | Fandom
Graph-Age: Worldwide NDS & PSP cumulative monthly sales & shipments by region! | Page 4 | NeoGAF
PlayStation Portable - Wikipedia
Weekly Japanese console chart: PSP sales rocket in tandem with new game | The Independent | The Independent
Nintendo's Switch to Success: 20 Years of Nintendo Console Sales
Financial Results Briefing for Fiscal Year Ended March 2011
You Decide: Sony PSP or Nintendo 3DS? | HowStuffWorks
Sony PSP Versus Nintendo DS - The Sales Showdown - Pure Nintendo
Nintendo's Numbers: The State Of The Industry
Sony figures show PSP sales falling - but more sold than you may expect | Technology | The Guardian
Game Consoles – November 2007 NPD Sales Figure Analysis « Blog Archive « DVDGuy's Blog @ Digital Digest
Who won? First-week sales of PS Vita vs. PSP vs. 3DS vs. DS (infographic) | VentureBeat
Wii, XBox, PS3, Nintendo DS, Gameboy Advance, PSP, iPhone, iPad: global market share and sales comparison | Got Schwartz?
Nintendo DS vs. The Sony PSP - InfiniGEEK
PS Vita being outsold by the PSP in Europe too | eTeknix
sales share of consoles in 4th generation onwards, in N. America/Europe/Japan regions (notice how stronger Xbox is in N. America) : r/xbox
Switch vs DS Sales Comparison – DS Lead Grows May 2020
PSP VS DS Graphics Comparison | N4G
Analysis: PSP Go To Face 'Slow Death At Retail' In U.S.?
The Reasons Why The PSP Was Ahead Of Its Time
PS Vita: Sales, Market Share and the 3DS | TheSixthAxis
Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
Looking back at 2009 console sales and ahead to 2010 trends | Ars Technica
Who won? First-week sales of PS Vita vs. PSP vs. 3DS vs. DS (infographic) | VentureBeat
PSP lifetime unit sales by region 2022 | Statista
Semi-Annual Financial Results Briefing for Fiscal Year Ending March 2012
