Shell Ellen Ruppel. (2009). Cheap: High Cost of Discount Culture. Penguin Books.
Chicago Style (17th ed.) CitationShell Ellen Ruppel. Cheap: High Cost of Discount Culture. Penguin Books, 2009.
MLA引文Shell Ellen Ruppel. Cheap: High Cost of Discount Culture. Penguin Books, 2009.
警告：這些引文格式不一定是100％准確.