Sindhøj, E. (2001). Elevated atmospheric CO₂ in a semi-natural grassland. Swedish University of Agricultural Sciences.
Chicago Style (17. basım) AtıfSindhøj, Erik. Elevated Atmospheric CO₂ in a Semi-natural Grassland. Uppsala: Swedish University of Agricultural Sciences, 2001.
MLA (8th ed.) AtıfSindhøj, Erik. Elevated Atmospheric CO₂ in a Semi-natural Grassland. Swedish University of Agricultural Sciences, 2001.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..