APA (7th ed.) Citation

Bowker, M. A. (2013). Ecological thresholds as a basis for defining management triggers for National Park Service vital signs--case studies for dryland ecosystems. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Bowker, Matthew A. Ecological Thresholds as a Basis for Defining Management Triggers for National Park Service Vital Signs--case Studies for Dryland Ecosystems. Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2013.

MLA (9th ed.) Citation

Bowker, Matthew A. Ecological Thresholds as a Basis for Defining Management Triggers for National Park Service Vital Signs--case Studies for Dryland Ecosystems. U.S. Department of the Interior, U.S. Geological Survey, 2013.