APA (7th ed.) Zitazioa
Smith, H. W. (1999). The Christian's secret of a happy life. T. Nelson Publishers.
Chicago Style (17th ed.) Zitazioa
Smith, Hannah Whitall. The Christian's Secret of a Happy Life. Nashville: T. Nelson Publishers, 1999.
MLA (9th ed.) Zitazioa
Smith, Hannah Whitall. The Christian's Secret of a Happy Life. T. Nelson Publishers, 1999.
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