Culp, D. L., Levine, A., & Cardillo, R. (2012). The layered garden design lessons for year-round beauty from Brandywine Cottage. Timber Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCulp, David L., Adam Levine, और Rob Cardillo. The Layered Garden Design Lessons for Year-round Beauty from Brandywine Cottage. Portland, Or.: Timber Press, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCulp, David L., et al. The Layered Garden Design Lessons for Year-round Beauty from Brandywine Cottage. Timber Press, 2012.
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