Colour Management resources

 
International Color Consortium 
Fogra 
European Color Initiative (ECI) 

PDF resources

 
The Ghent PDF Workgroup (GWG)
 NPES Guide to PDF/X
Adobe Portable Document Format (PDF) 
Adobe PDF Transparency
 Adobe Print Guide CS4

 ISO

There are many interdependent standards which can be found here


ISO 12647-2:2004Offset lithographic processes
ISO 12647-7:2007Proofing processes working directly from digital data
ISO 12647-8Validation printing processes working directly from digital data


ISO 3664:2009Graphic technology and photography -- Viewing conditions
ISO 12646:2008Graphic technology -- Displays for colour proofing -- Characteristics and viewing conditions
ISO 15930-1:2001Complete exchange using CMYK data (PDF/X-1 and PDF/X-1a)


PSO
Process Standard Offset