Vermont Department of Fish and Wildlife website accessed on 1 February 2001 (http://www.anr.state.vt.us/fw/fwhome/html/2001dates.htm). Waters, J.H. 1964.
Vermont Department of Fish and Wildlife. Site Web consulté le 1er février 2001 (http://www.anr.state.vt.us/fw/fwhome/html/2001dates.htm). Waters, J.H. 1964.