Gamasutra - The Mushroom Growth Plan: Inside Nintendo's Numbers
PlayStation Portable | Video Game Sales Wiki | Fandom
Nintendo's Switch to Success: 20 Years of Nintendo Console Sales
PS Vita being outsold by the PSP in Europe too | eTeknix
Graph-Age: Worldwide NDS & PSP cumulative monthly sales & shipments by region! | NeoGAF
PS4 vs DS Sales Comparison – PS4 Closes the Gap in June 2020
First-month sales of previous consoles vs. first 24H of PS4 sales : r/PS4
Third Quarter Financial Results Briefing for Fiscal Year Ended March 2010
The latest global console sales list! NS only ranked 13th, first is PS2 | Luju Bar
Japan's October Hardware Sales | TheSixthAxis
Who won? First-week sales of PS Vita vs. PSP vs. 3DS vs. DS (infographic) | VentureBeat
3DS vs PSP – VGChartz Gap Charts – October 2018 Update
Who won? First-week sales of PS Vita vs. PSP vs. 3DS vs. DS (infographic) | VentureBeat
Gamasutra - Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
Gamasutra - NPD: Behind the Numbers, February 2010
Nintendo vs Sony: Who's winning the console war in handheld gaming? | IG EN
CHART OF THE DAY: iPad Estimate Sales Vs. iPhone, iPod, Nintendo
Popularity of Nintendo DS Begins to Curb, PS3 Sales on the Rise in Japan | TechPowerUp
Garaph - DS vs PSP
Switch vs DS – VGChartz Gap Charts – October 2017 Update
Chart: Sony Trumps Nintendo in Shrinking Console Market | Statista
NPD Seventh generation | Video Game Sales Wiki | Fandom
Gamasutra - Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
On the 802 11 Turbulence of Nintendo DS
Apple slams PSP, DS at iPhone/iPod conference - GameSpot
Report: PSP game sales robust, DS sales amazing | Ars Technica
Analysis: Nintendo's DSi Sales Trends, Wii Price Cut Too Late?
