Christopher, T. (2011). The new American landscape: Leading voices on the future of sustainable gardening. Timber Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChristopher, Thomas. The New American Landscape: Leading Voices on the Future of Sustainable Gardening. Portland, Or.: Timber Press, 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रChristopher, Thomas. The New American Landscape: Leading Voices on the Future of Sustainable Gardening. Timber Press, 2011.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.