Author G. Sutton R. Murphy P. Taverner M. Sullivan H. Cutler B. Christy J. Weber F. Ruff D. Stoner W. Scott E. McIlhenny Sutton, G., Murphy, R., Taverner, P., Sullivan, M., Cutler, H., Christy, B., Weber, J., Ruff, F., Stoner, D., Scott, W., McIlhenny, E., 1940. Birds and the Winter of 1939-40. The Auk 57, 401-410. doi:10.2307/4079004
