Andrews, C., Dick, J., Jonasson, C., & Callaghan, T. (2011). Assessment of Biological and Environmental Phenology at a Landscape Level from 30 Years of Fixed-Date Repeat Photography in Northern Sweden. AMBIO, 40(6), 600.
Chicago Style (17th ed.) CitationAndrews, Christopher, Jan Dick, Christer Jonasson, and Terry Callaghan. "Assessment of Biological and Environmental Phenology at a Landscape Level from 30 Years of Fixed-Date Repeat Photography in Northern Sweden." AMBIO 40, no. 6 (2011): 600.
MLA (9th ed.) CitationAndrews, Christopher, et al. "Assessment of Biological and Environmental Phenology at a Landscape Level from 30 Years of Fixed-Date Repeat Photography in Northern Sweden." AMBIO, vol. 40, no. 6, 2011, p. 600.
Warning: These citations may not always be 100% accurate.