Virtanen, R. (1996). Arctic and oroarctic vegetation patterns in Northern Europe as a consequence of topography, climate, bedrock conditions and grazing. University of Oulu.
Lua i Stíl Chicago (17ú heag.)Virtanen, 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.
Lua MLA (8ú heag.)Virtanen, Risto. Arctic and Oroarctic Vegetation Patterns in Northern Europe as a Consequence of Topography, Climate, Bedrock Conditions and Grazing. University of Oulu, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.