PlayStation Portable - Wikipedia
Nintendo Switch total sales have officially surpassed Wii, PlayStation - SlashGear
Japanese sales figures highlight 3DS' holiday dominance | Pocket Gamer.biz | PGbiz
PSP Sales Are Up Year After Year | by Sohrab Osati | Sony Reconsidered
NPD 2009 sales figures | Video Game Sales Wiki | Fandom
List of best-selling game consoles - Wikipedia
A Graphic of Overall Persona Game Sales in Japan for January 2017 - Persona Central
PlayStation Portable | Video Game Sales Wiki | Fandom
A Graphic of Overall Persona Game Sales in Japan for January 2017 - Persona Central
PSP & PSV unit sales worldwide 2004-2022 | Statista
PlayStation 4 sales hit 112.3 million worldwide, up 1.9 million in Q1 | TweakTown
Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
Most sold video game consoles worldwide | Statista
3DS vs PSP – VGChartz Gap Charts – February 2018 Update
The annual sales number of PSP overtakes Nintendo DS for the first time since its release at the top of all game machines - GIGAZINE
Nintendo's Switch to Success: 20 Years of Nintendo Console Sales
Nintendo Switch surpasses the SNES in total sales - SlashGear
Sony PSP serves up more than games
The latest global console sales list! NS only ranked 13th, first is PS2 | Luju Bar
Corporate Management Policy Briefing/Third Quarter Financial Results Briefing for Fiscal Year Ending March 2012
Sony PSP Go suffering appalling Japanese sales? - SlashGear
17,618: That's how many PSP Go Sony sold in Japan in 2010 | TechCrunch
Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
