Nintendo's Switch to Success: 20 Years of Nintendo Console Sales
Gamasutra - Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
Games: Nintendo – the winner takes it all – eurotechnology.com
PSP vs. Nintendo DS – Closest Race Since SNES vs. Genesis
PlayStation 2 Best-Selling Game Console of All Time: Report | Beebom
Semi-Annual Financial Results Briefing for Fiscal Year Ending March 2012
Popularity of Nintendo DS Begins to Curb, PS3 Sales on the Rise in Japan | TechPowerUp
PS4 vs DS Sales Comparison – PS4 Closes the Gap in June 2020
Nintendo 3DS Reaches 5 Million In Japan, Breaks Record - Siliconera
PlayStation Portable | Video Game Sales Wiki | Fandom
Nintendo vs Sony: Who's winning the console war in handheld gaming? | IG EN
Gamasutra - Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
Who won? First-week sales of PS Vita vs. PSP vs. 3DS vs. DS (infographic) | VentureBeat
NPD Seventh generation | Video Game Sales Wiki | Fandom
Gamasutra - The Mushroom Growth Plan: Inside Nintendo's Numbers
Third Quarter Financial Results Briefing for Fiscal Year Ended March 2010
Nintendo DS vs. The Sony PSP - InfiniGEEK
Graph-Age: Worldwide NDS & PSP cumulative monthly sales & shipments by region! | NeoGAF
First-month sales of previous consoles vs. first 24H of PS4 sales : r/PS4
Japan's October Hardware Sales | TheSixthAxis
Nintendo Didn't Expect 3DS Sales to Drop Like This | WIRED
Apple slams PSP, DS at iPhone/iPod conference - GameSpot
3DS vs PSP – VGChartz Gap Charts – October 2018 Update
PlayStation Portable - Wikipedia
Garaph - DS vs PSP
PSP and DS sales running close to even in Japan – Destructoid
On the 802 11 Turbulence of Nintendo DS
