Nintendo Didn't Expect 3DS Sales to Drop Like This | WIRED
Chart: Sony Trumps Nintendo in Shrinking Console Market | Statista
Gamasutra - The Mushroom Growth Plan: Inside Nintendo's Numbers
Report: PSP game sales robust, DS sales amazing | Ars Technica
Switch vs DS – VGChartz Gap Charts – October 2017 Update
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
PlayStation Portable - Wikipedia
The latest global console sales list! NS only ranked 13th, first is PS2 | Luju Bar
PSP and DS sales running close to even in Japan – Destructoid
Popularity of Nintendo DS Begins to Curb, PS3 Sales on the Rise in Japan | TechPowerUp
3DS vs PSP – VGChartz Gap Charts – October 2018 Update
On the 802 11 Turbulence of Nintendo DS
Garaph - DS vs PSP
The first 2 years: PSP has sold better in the US than PS1, DS, more | Engadget
Nintendo DS vs. The Sony PSP - InfiniGEEK
Nintendo vs Sony: Who's winning the console war in handheld gaming? | IG EN
Gamasutra - Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
PSP vs. Nintendo DS – Closest Race Since SNES vs. Genesis
PlayStation Portable | Video Game Sales Wiki | Fandom
PS Vita being outsold by the PSP in Europe too | eTeknix
Who won? First-week sales of PS Vita vs. PSP vs. 3DS vs. DS (infographic) | VentureBeat
Nintendo's Switch to Success: 20 Years of Nintendo Console Sales
Gamasutra - NPD: Behind the Numbers, February 2010
Analysis: Nintendo's DSi Sales Trends, Wii Price Cut Too Late?
