Ohrel, R. L., & Register, K. M. (2001). Volunteer estuary monitoring: A methods manual (2nd ed.). The Ocean Conservancy : United States Environmental Protection Agency, Office of Wetlands, Oceans, and Watersheds.
Chicago Style (17th ed.) CitationOhrel, Ronald L., and Kathleen M. Register. Volunteer Estuary Monitoring: A Methods Manual. 2nd ed. [Washington, D.C.]: The Ocean Conservancy : United States Environmental Protection Agency, Office of Wetlands, Oceans, and Watersheds, 2001.
MLA (9th ed.) CitationOhrel, Ronald L., and Kathleen M. Register. Volunteer Estuary Monitoring: A Methods Manual. 2nd ed. The Ocean Conservancy : United States Environmental Protection Agency, Office of Wetlands, Oceans, and Watersheds, 2001.
Warning: These citations may not always be 100% accurate.