Audit Bureau of Circulations (USA)
Self-regulatory auditing organization, responsible to advertisers, advertising agencies, and the media they use for the verification and dissemination of members' circulation, readership, and audience information.
Audit Bureau of Circulations Australia
Provides advertisers, marketers, and media buyers with verified circulation data for paid publications. Site also includes the Circulations Audit Board and Audit Bureau of Verification Services.
Global provider of audited data for the marketing and media/information industries.
Certified Audit of Circulations
Nonprofit organization doing circulation auditing for newspapers, community publications, Internet and other media.