Wilson, D., & Blackwood, J. (2021). The four-hour school day: How you and your kids can thrive in the homeschool life (Unabridged.). Zondervan.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWilson, Durenda, और Jill Blackwood. The Four-hour School Day: How You and Your Kids Can Thrive in the Homeschool Life. Unabridged. Grand Rapids: Zondervan, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWilson, Durenda, और Jill Blackwood. The Four-hour School Day: How You and Your Kids Can Thrive in the Homeschool Life. Unabridged. Zondervan, 2021.
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