PlayStation Portable | Video Game Sales Wiki | Fandom
NPD Seventh generation | Video Game Sales Wiki | Fandom
Nintendo's Switch to Success: 20 Years of Nintendo Console Sales
PSP VS DS Graphics Comparison | N4G
PS Vita being outsold by the PSP in Europe too | eTeknix
Game Consoles – November 2007 NPD Sales Figure Analysis « Blog Archive « DVDGuy's Blog @ Digital Digest
Wii, XBox, PS3, Nintendo DS, Gameboy Advance, PSP, iPhone, iPad: global market share and sales comparison | Got Schwartz?
Games: Nintendo – the winner takes it all – eurotechnology.com
You Decide: Sony PSP or Nintendo 3DS? | HowStuffWorks
Sony PSP vs. Nintendo DS - IGN
Sony PSP Versus Nintendo DS - The Sales Showdown - Pure Nintendo
Who won? First-week sales of PS Vita vs. PSP vs. 3DS vs. DS (infographic) | VentureBeat
The annual sales number of PSP overtakes Nintendo DS for the first time since its release at the top of all game machines - GIGAZINE
Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
PS4 vs DS – VGChartz Gap Charts – June 2019 Update
Weekly Japanese console chart: PSP sales rocket in tandem with new game | The Independent | The Independent
3DS vs PSP – VGChartz Gap Charts – October 2018 Update
Apple slams PSP, DS at iPhone/iPod conference - GameSpot
Sony figures show PSP sales falling - but more sold than you may expect | Technology | The Guardian
PlayStation Portable - Wikipedia
Semi-Annual Financial Results Briefing for Fiscal Year Ending March 2012
Who won? First-week sales of PS Vita vs. PSP vs. 3DS vs. DS (infographic) | VentureBeat
sales share of consoles in 4th generation onwards, in N. America/Europe/Japan regions (notice how stronger Xbox is in N. America) : r/xbox
