Jeffery, J. (2013). Seedswap: The gardener's guide to saving and swapping seeds. Roost Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJeffery, Josie. Seedswap: The Gardener's Guide to Saving and Swapping Seeds. Boston: Roost Books, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJeffery, Josie. Seedswap: The Gardener's Guide to Saving and Swapping Seeds. Roost Books, 2013.
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