(2012). Survey of Consumer Attitudes and Behavior, July 2003 University of Michigan. Survey Research Center. Economic Behavior Program. [electronic resource].
Cita Chicago (17th ed.)Survey of Consumer Attitudes and Behavior, July 2003 University of Michigan. Survey Research Center. Economic Behavior Program. [electronic Resource]. 2012.
Cita MLA (9th ed.)Survey of Consumer Attitudes and Behavior, July 2003 University of Michigan. Survey Research Center. Economic Behavior Program. [electronic Resource]. 2012.
Atenció: Aquestes cites poden no estar 100% correctes.