(2006). Survey of Consumer Attitudes and Behavior, September 1997 University of Michigan. Survey Research Center.Economic Behavior Program. [electronic resource].
Chicago-referens (17:e uppl.)Survey of Consumer Attitudes and Behavior, September 1997 University of Michigan. Survey Research Center.Economic Behavior Program. [electronic Resource]. 2006.
MLA-referens (9:e uppl.)Survey of Consumer Attitudes and Behavior, September 1997 University of Michigan. Survey Research Center.Economic Behavior Program. [electronic Resource]. 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.