Johnsen, J. (2017). The spirit of stone: 101 practical & creative stonescaping ideas for your garden (First edition.). St. Lynn's Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJohnsen, Jan. The Spirit of Stone: 101 Practical & Creative Stonescaping Ideas for Your Garden. First edition. Pittsburgh: St. Lynn's Press, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रJohnsen, Jan. The Spirit of Stone: 101 Practical & Creative Stonescaping Ideas for Your Garden. First edition. St. Lynn's Press, 2017.
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