Shell Ellen Ruppel. (2009). Cheap: High Cost of Discount Culture. Penguin Books.
Chicago-čujuhus (17. p.)Shell Ellen Ruppel. Cheap: High Cost of Discount Culture. Penguin Books, 2009.
MLA-čujuhus (9. p.)Shell Ellen Ruppel. Cheap: High Cost of Discount Culture. Penguin Books, 2009.
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