Audin PR-koodit löytyy tuolta:
http://www.laneholloway.com/wp-content/uploads/2009/05/PAG_PR_OptionsCodes.pdf (http://www.laneholloway.com/wp-content/uploads/2009/05/PAG_PR_OptionsCodes.pdf)
Tuolta löytyy PR-koodi haku palvelu
http://prsearch.planetvag.com/ (http://prsearch.planetvag.com/)