APA (7th ed.) Zitazioa
Howard, D. M. (1969). The costly harvest. Tyndale House Publishers.
Chicago Style (17th ed.) Zitazioa
Howard, David M. The Costly Harvest. Wheaton: Tyndale House Publishers, 1969.
MLA (9th ed.) Zitazioa
Howard, David M. The Costly Harvest. Tyndale House Publishers, 1969.
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