Robertson, I., Loader, N., McCarroll, D., Knaap, W. v. d., Robertson, I., & Gagen, M. (2007). Characterizing carbon isotopic variability in Sphagnum. The Holocene, 17(3), pp. 403-410. doi:10.1177/0959683607076474

Robertson, Iain, N.J Loader, D. McCarroll, W.O. van der Knaap, I. Robertson, and M. Gagen. "Characterizing Carbon Isotopic Variability in Sphagnum." The Holocene 17, no. 3 (2007): 403-410.

Robertson, Iain, et al. "Characterizing Carbon Isotopic Variability in Sphagnum." The Holocene 17.3 (2007): 403-410.