Campbell, S., & Kujawski, J. (2015). How to mulch: Save water, feed the soil, and suppress weeds. Storey Publishing.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCampbell, Stu, और Jennifer Kujawski. How to Mulch: Save Water, Feed the Soil, and Suppress Weeds. North Adams, MA: Storey Publishing, 2015.
एमएलए (8वां संस्करण) प्रशस्ति पत्रCampbell, Stu, और Jennifer Kujawski. How to Mulch: Save Water, Feed the Soil, and Suppress Weeds. Storey Publishing, 2015.
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