Osteen,Joel. (2007). become a better you- 7 keys to improving your life every day. Simon & Schuster.
シカゴスタイル引用形Osteen,Joel. Become a Better You- 7 Keys to Improving Your Life Every Day. UK: Simon & Schuster, 2007.
MLA引用形式Osteen,Joel. Become a Better You- 7 Keys to Improving Your Life Every Day. Simon & Schuster, 2007.
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