APA (7 ম সংস্করণ) উদ্ধৃতি

Virtanen, R. (1996). Arctic and oroarctic vegetation patterns in Northern Europe as a consequence of topography, climate, bedrock conditions and grazing. University of Oulu.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

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.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Virtanen, Risto. Arctic and Oroarctic Vegetation Patterns in Northern Europe as a Consequence of Topography, Climate, Bedrock Conditions and Grazing. University of Oulu, 1996.