Wolf, K., & Wolf, J. (2020). Suffer strong: How to survive anything by redefining everything. Zondervan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWolf, Katherine, और Jay Wolf. Suffer Strong: How to Survive Anything by Redefining Everything. Grand Rapids, Michigan: Zondervan, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWolf, Katherine, और Jay Wolf. Suffer Strong: How to Survive Anything by Redefining Everything. Zondervan, 2020.
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