Hobson, J. (2007). Niwaki: Pruning, training and shaping trees the Japanese way. Timber Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHobson, Jake. Niwaki: Pruning, Training and Shaping Trees the Japanese Way. Portland, Or.: Timber Press, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHobson, Jake. Niwaki: Pruning, Training and Shaping Trees the Japanese Way. Timber Press, 2007.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.