Mueller, D. L. (2010). Daring to be different: Missouri's remarkable Owen sisters. University of Missouri Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMueller, Doris Land. Daring to Be Different: Missouri's Remarkable Owen Sisters. Columbia: University of Missouri Press, 2010.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMueller, Doris Land. Daring to Be Different: Missouri's Remarkable Owen Sisters. University of Missouri Press, 2010.
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