Freedman, R., & Washington, S. (2005). The voice that challenged a nation: Marian anderson and the struggle for equal rights (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFreedman, Russell, और Sharon Washington. The Voice That Challenged a Nation: Marian Anderson and the Struggle for Equal Rights. Unabridged. Prince Frederick: Recorded Books Inc., 2005.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFreedman, Russell, और Sharon Washington. The Voice That Challenged a Nation: Marian Anderson and the Struggle for Equal Rights. Unabridged. Recorded Books Inc., 2005.
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