Frey, K. (2018). Ground rules: 100 easy lessons for growing a more glorious garden. Timber Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFrey, Kate. Ground Rules: 100 Easy Lessons for Growing a More Glorious Garden. Portland, Oregon: Timber Press, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFrey, Kate. Ground Rules: 100 Easy Lessons for Growing a More Glorious Garden. Timber Press, 2018.
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