Ortberg, J., & Cresswell, T. (2014). Soul keeping: Caring for the most important part of you (Unabridged.). Zondervan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOrtberg, John, और Tommy Cresswell. Soul Keeping: Caring for the Most Important Part of You. Unabridged. Grand Rapids: Zondervan, 2014.
एमएलए (8वां संस्करण) प्रशस्ति पत्रOrtberg, John, और Tommy Cresswell. Soul Keeping: Caring for the Most Important Part of You. Unabridged. Zondervan, 2014.
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