Essmann, H., & Pettenella, D. (2001). Forestry in Ukraine at the crossroads: Analyses and ideas for a Sustainable Development.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEssmann, Hans-Friedrich, और Davide Pettenella. Forestry in Ukraine at the Crossroads: Analyses and Ideas for a Sustainable Development. 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEssmann, Hans-Friedrich, और Davide Pettenella. Forestry in Ukraine at the Crossroads: Analyses and Ideas for a Sustainable Development. 2001.
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