Gurian, M., & Podehl, N. (2013). The wonder of aging: A new approach to embracing life after fifty (Unabridged.). Brilliance Audio.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGurian, Michael, और Nick Podehl. The Wonder of Aging: A New Approach to Embracing Life After Fifty. Unabridged. Grand Haven, MI: Brilliance Audio, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGurian, Michael, और Nick Podehl. The Wonder of Aging: A New Approach to Embracing Life After Fifty. Unabridged. Brilliance Audio, 2013.
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