APA (7th ed.) Citation

Will-Wolf, S., Jovan, S., Amacher, M. C., & Patterson, P. L. (2020). Lichen elemental indicators for air pollution in eastern United States forests: A pilot study in the Upper Midwest. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station.

Chicago Style (17th ed.) Citation

Will-Wolf, Susan, Sarah Jovan, Michael C. Amacher, and Paul L. Patterson. Lichen Elemental Indicators for Air Pollution in Eastern United States Forests: A Pilot Study in the Upper Midwest. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2020.

MLA (9th ed.) Citation

Will-Wolf, Susan, et al. Lichen Elemental Indicators for Air Pollution in Eastern United States Forests: A Pilot Study in the Upper Midwest. U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 2020.