Smith, P, Ashmore, M, Black, HIJ, Burgess, P, Evans, C, Hails, R, Potts, S, Quine, T, Thomson, A, Biesmeijer, K, Breeze, T, Broadmeadow, M, Ferrier, RC, Freer, J, Hansom, J, Haygarth, P, Hesketh, H, Hicks, K, Johnson, A, Kay, D, Kunin, W, Lilly, A, May, L, Memmott, J, Orr, H, Pickup, R, Purse, B & Squire, G 2011,
Regulating services. in
UK National Ecosystem Assessment. Understanding nature's value to society. Technical Report. Cambridge, UNEP-WCMC, Chapter 14. pp. 535-596. <
http://uknea.unep-wcmc.org/LinkClick.aspx?fileticket=XPPBQJuWlzk%3D&tabid=82>