Sonic the Hedgehog 3 (prototype; 1993-11-03) - Sonic Retro

Sonic the Hedgehog 3 (prototype; 1993-11-03)/Comparisons/Lava Reef Zone - Sonic Retro

Sonic the Hedgehog 3/Magazine articles - Sega Retro

Sonic The Hedgehog 3 (Unknown) (Beta) (1993 11 03) : Free Download, Borrow, and Streaming : Internet Archive

Sonic the Hedgehog 3 (Nov 3, 1993 prototype) - Hidden Palace

Sonic Chaos

Sonic The Hedgehog 3 ( Nov 3, 1993 Prototype) : MeeiMekhi : Free Download, Borrow, and Streaming : Internet Archive

Category:Prototypes - Sega Retro

Sonic the Hedgehog 3 (prototype; 1993-11-03)/Comparisons/Marble Garden Zone - Sonic Retro

Sonic Prototypes (released by Hidden Palace), Page 4

Sonic the Hedgehog 3 (prototype; 1993-11-03)/Comparisons/Flying Battery Zone - Sonic Retro

7 Sonic The Hedgehog Prototypes You Were Never Meant To Play

Sonic the Hedgehog 3 (Nov 3, 1993 prototype) - Hidden Palace