Hindman, Larry J., and Robert L. Tjaden. “Awareness and Opinions of Maryland Citizens Toward Chesapeake Bay Mute Swans Cygnus Olor and Management Alternatives”. Wildfowl (November 27, 2014): 167–185. Accessed December 16, 2025. https://tidsskrift.dk/Wildfowl/article/view/153620.