Virtanen, R. (1996). Arctic and oroarctic vegetation patterns in Northern Europe as a consequence of topography, climate, bedrock conditions and grazing. University of Oulu.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVirtanen, Risto. Arctic and Oroarctic Vegetation Patterns in Northern Europe as a Consequence of Topography, Climate, Bedrock Conditions and Grazing. Oulu, Finland: University of Oulu, 1996.
एमएलए (8वां संस्करण) प्रशस्ति पत्रVirtanen, Risto. Arctic and Oroarctic Vegetation Patterns in Northern Europe as a Consequence of Topography, Climate, Bedrock Conditions and Grazing. University of Oulu, 1996.
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