Robertson, K., Howard, C., & Robertson, W. (2015). Strong and kind: And other important character traits your child needs to succeed. Thomas Nelson.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRobertson, Korie, Chrys Howard, और Willie Robertson. Strong and Kind: And Other Important Character Traits Your Child Needs to Succeed. Nashville, Tennessee: Thomas Nelson, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रRobertson, Korie, et al. Strong and Kind: And Other Important Character Traits Your Child Needs to Succeed. Thomas Nelson, 2015.
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