1. Petroleum ingestion reduces reproduction in Cassin's auklet;Ainley;Marine Pollution Bulletin,1981
2. Anderson, H.A., Amrhein, J.F., Shubat, P., Hesse, J., 1993. Protocol for a Uniform Great Lakes Sport Fish Consumption Advisory. Great Lakes Fish Advisory Task Force. Unpublished report.
3. Austin, J.E., Custer, C.M., Afton, A.D., 1998. Lesser Scaup (Aythya affinis). In: Poole, E., Gill, F. (Eds.), The Birds of North America, No. 338, 32 pp. The Birds of North America, Philadelphia, PA, USA.
4. Bacone, J.A., 1979. Shell Oil Dune and Swale. Unpublished Report of Indiana Department of Natural Resources, Indianapolis, IN, USA.
5. Birds of the Indiana Dunes;Brock,1986