APA (7th ed.) Citation

Tuhkanen, S. (1984). A circumboreal system of climatic-phytogeographical regions. Finnish Botanical Publ. Board.

Chicago Style (17th ed.) Citation

Tuhkanen, Sakari. A Circumboreal System of Climatic-phytogeographical Regions. Helsinki: Finnish Botanical Publ. Board, 1984.

MLA (9th ed.) Citation

Tuhkanen, Sakari. A Circumboreal System of Climatic-phytogeographical Regions. Finnish Botanical Publ. Board, 1984.

Warning: These citations may not always be 100% accurate.