Rubin, G. (2018). The happiness project, tenth anniversary edition: Or, why i spent a year trying to sing in the morning, clean my closets, fight right, read aristotle, and generally have more fun.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Rubin, Gretchen. The Happiness Project, Tenth Anniversary Edition: Or, Why I Spent a Year Trying to Sing in the Morning, Clean My Closets, Fight Right, Read Aristotle, and Generally Have More Fun. 2018.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Rubin, Gretchen. The Happiness Project, Tenth Anniversary Edition: Or, Why I Spent a Year Trying to Sing in the Morning, Clean My Closets, Fight Right, Read Aristotle, and Generally Have More Fun. 2018.
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