Karlman, M. (1984). Pathogens and other threats to Pinus contorta in Northern Sweden. Dept. of Ecological Botany, University of Umeå.
Chicago Style aipamenaKarlman, Margareta. Pathogens and Other Threats to Pinus Contorta in Northern Sweden. Umeå: Dept. of Ecological Botany, University of Umeå, 1984.
MLA aipamenaKarlman, Margareta. Pathogens and Other Threats to Pinus Contorta in Northern Sweden. Dept. of Ecological Botany, University of Umeå, 1984.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.