1. Bird Census Techniques;Bibby,1992
2. The Timing of Waterfowl arrival and Dispersion During Spring Migration in Labrador;Chaulk;Northeastern Naturalist,2007
3. Agricultural Wetlands and Waterbirds : A Review;Crech;Waterbirds,2002
4. Regional Characteristics of Bird Community in Nakdong River Basin;Hong;Korean J. Ecol,2004