Is there a place I can buy game manuals from?

[Thunderscope]

Im looking for a game manual for Sonic Adventure 2 for Dreamcast and I dont know where I can buy one at without buying the game again. I dont want a downloaded copy but the real thing

 

[QiG]

E-mail sega since they own the console and game rights. I've gotten manuals through Nintendo.com for gamecube games before (I think they were all first party releases though). And I've gotten manuals from Atlus games too by e-mailing them directly.

 

[Gentlegamer]

ebay, too

 

[Grecco]

I think you can get em from the manufacturer. From Sega in this case