APA (7th ed.) Zitazioa
Smith, W. H. (1988). The Christian's secret of a happy life. Fleming H. Revell Company.
Chicago Style (17th ed.) Zitazioa
Smith, W. Hannah. The Christian's Secret of a Happy Life. Chicago: Fleming H. Revell Company, 1988.
MLA (9th ed.) Zitazioa
Smith, W. Hannah. The Christian's Secret of a Happy Life. Fleming H. Revell Company, 1988.
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