APA (7th ed.) Citation

Hagner, S. (1990). The lodgepole pine in Sweden: Introduction of a tree into a new environment. The University of British Columbia.

Chicago Style (17th ed.) Citation

Hagner, Stig. The Lodgepole Pine in Sweden: Introduction of a Tree into a New Environment. Vancouver, B.C: The University of British Columbia, 1990.

MLA (9th ed.) Citation

Hagner, Stig. The Lodgepole Pine in Sweden: Introduction of a Tree into a New Environment. The University of British Columbia, 1990.