The portable PlayStations were Sony at its most ambitious - The Verge

The PS Vita and PSP were integral parts of PlayStation history, as Sony attempted to expand its console game business into the portable realm dominated by Nintendo.

PlayStation 4, connected: first impressions out of the box - The Verge

Is PlayStation the best video game console ever? - Quora

Sony handheld gaming consoles timeline – from PocketStation to PlayStation Vita, playstation portable

The best PS5 games for 2023

the Prime Time Of Handheld Consoles – The portable power of the psp — sabukaru

The environmental impact of a PlayStation 4 - The Verge

A History of PlayStation's Portable Consoles - KeenGamer

Will the new Sony handheld gaming device outdo PS Vita's legacy?

The best portable game console you can buy - The Verge

Sony Interactive Entertainment - Wikipedia

Sony Wants to Make PlayStation the Best Place to Play Third-Party Games