Johns, J. (2019). Vertical gardening: A complete guide to growing food, herbs, and flowers in small spaces. GroundSwell Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohns, Jason. Vertical Gardening: A Complete Guide to Growing Food, Herbs, and Flowers in Small Spaces. Summertown, Tennessee: GroundSwell Books, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJohns, Jason. Vertical Gardening: A Complete Guide to Growing Food, Herbs, and Flowers in Small Spaces. GroundSwell Books, 2019.
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