Russell, S. M., & Ruff, M. S. (2014). The U.S. whale watching industry of Greater Puget Sound: A description and baseline analysis. U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northwest Fisheries Science Center.
Chicago Style (17th ed.) CitationRussell, Suzanne M., and Morgan Schniedler Ruff. The U.S. Whale Watching Industry of Greater Puget Sound: A Description and Baseline Analysis. Seattle, Washington: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northwest Fisheries Science Center, 2014.
MLA (9th ed.) CitationRussell, Suzanne M., and Morgan Schniedler Ruff. The U.S. Whale Watching Industry of Greater Puget Sound: A Description and Baseline Analysis. U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Northwest Fisheries Science Center, 2014.