Coulson, T., Catchpole, E., Albon, S., Morgan, B., Pemberton, J., Clutton-Brock, T., . . . Grenfell, B. (2001). Age, sex, density, winter weather, and population crashes in Soay sheep.
Chicago-viite (17. p.)Coulson, T., E. Catchpole, S. Albon, B. Morgan, J. Pemberton, T. Clutton-Brock, M. Crawley, ja B. Grenfell. Age, Sex, Density, Winter Weather, and Population Crashes in Soay Sheep. 2001.
MLA-viite (9. p.)Coulson, T., et al. Age, Sex, Density, Winter Weather, and Population Crashes in Soay Sheep. 2001.
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