Vovk, V. (2003). Sustainable Development for the Second World: Ukraine and the nations in transition.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVovk, Viktor. Sustainable Development for the Second World: Ukraine and the Nations in Transition. 2003.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVovk, Viktor. Sustainable Development for the Second World: Ukraine and the Nations in Transition. 2003.
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