Campbell, C. C. (2019). The heart of perfection: How the saints taught me to trade my dream of perfect for God's (First Howard Books hardcover edition.). Howard Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCampbell, Colleen Carroll. The Heart of Perfection: How the Saints Taught Me to Trade My Dream of Perfect for God's. First Howard Books hardcover edition. New York: Howard Books, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCampbell, Colleen Carroll. The Heart of Perfection: How the Saints Taught Me to Trade My Dream of Perfect for God's. First Howard Books hardcover edition. Howard Books, 2019.
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