Ruff, A. R. (2014). An author & a gardener: The gardens and friendship of Edith Wharton and Laurence Johnston. Windgather Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRuff, Allan R. An Author & a Gardener: The Gardens and Friendship of Edith Wharton and Laurence Johnston. Oxford, [England] ; Havertown, Pennsylvania: Windgather Press, 2014.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRuff, Allan R. An Author & a Gardener: The Gardens and Friendship of Edith Wharton and Laurence Johnston. Windgather Press, 2014.
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