APA

Ringold, P., Barker, J., Bollman, M., Bradshaw, G., Carson, W., Cline, S., Fiorella, M., Stepp, J., States. Environmental Protection Agency. Office of Research and Development, U., Health and Environmental Effects Laboratory, N., Corporation, D., State University, O., & States. Forest Service, U. (1997). Monitoring design for riparian forests in the Pacific Northwest : research plan. : U.S. Environmental Protection Agency, Office of Research and Development, National Health and Environmental Effects Laboratory.