Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
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Financial Results Briefing for Fiscal Year Ended March 2011
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PSP lifetime unit sales by region 2022 | Statista
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Exclusive: Sony PSP Versus Nintendo DS - The Sales Showdown
The first 2 years: PSP has sold better in the US than PS1, DS, more | Engadget
Graph-Age: Worldwide NDS & PSP cumulative monthly sales & shipments by region! | Page 4 | NeoGAF
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Weekly Japanese console chart: PSP sales rocket in tandem with new game | The Independent | The Independent
The first 2 years: PSP has sold better in the US than PS1, DS, more | Engadget
NPD Seventh generation | Video Game Sales Wiki | Fandom
