Poswolsky, S. (2021). Friendship in the age of loneliness: An optimist's guide to connection (First edition.). Running Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPoswolsky, Smiley. Friendship in the Age of Loneliness: An Optimist's Guide to Connection. First edition. Philadelphia: Running Press, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPoswolsky, Smiley. Friendship in the Age of Loneliness: An Optimist's Guide to Connection. First edition. Running Press, 2021.
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