Baars. Aging and the Art of Living. Johns Hopkins University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBaars. Aging and the Art of Living. Johns Hopkins University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBaars. Aging and the Art of Living. Johns Hopkins University Press.
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