APA

Wolf, S., Keenan, T., Fisher, J., Baldocchi, D., Desai, A., Richardson, A., Scott, R., Law, B., Litvak, M., Brunsell, N., Peters, W., & van der Laan-Luijkx, I. (2016). Warm spring reduced carbon cycle impact of the 2012 US summer drought. : National Academy of Sciences.