Monson, D. H., Doak, D. F., Ballachey, B. E., Johnson, A., & Bodkin, J. L. (2000). Long-term impacts of the Exxon Valdez oil spill on sea otters, assessed through age-dependent mortality patterns. National Academy of Sciences.

Monson, Daniel H., Daniel F. Doak, Brenda E. Ballachey, Ancel Johnson, and James L. Bodkin. Long-term Impacts of the Exxon Valdez Oil Spill On Sea Otters, Assessed Through Age-dependent Mortality Patterns. National Academy of Sciences, 2000.

Monson, Daniel H., et al. Long-term Impacts of the Exxon Valdez Oil Spill On Sea Otters, Assessed Through Age-dependent Mortality Patterns. National Academy of Sciences, 2000.