Sindhøj, E. (2001). Elevated atmospheric CO₂ in a semi-natural grassland. Swedish University of Agricultural Sciences.
Chicago Style aipamenaSindhøj, Erik. Elevated Atmospheric CO₂ in a Semi-natural Grassland. Uppsala: Swedish University of Agricultural Sciences, 2001.
MLA aipamenaSindhøj, Erik. Elevated Atmospheric CO₂ in a Semi-natural Grassland. Swedish University of Agricultural Sciences, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.