Kummerow, M., & Foster, J. A. (2018). Unrelenting: Love and resistance in pre-war germany (Unabridged.). Tantor Audio.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKummerow, Marion, और James Anderson Foster. Unrelenting: Love and Resistance in Pre-war Germany. Unabridged. Old Saybrook: Tantor Audio, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKummerow, Marion, और James Anderson Foster. Unrelenting: Love and Resistance in Pre-war Germany. Unabridged. Tantor Audio, 2018.
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