The Photographic identification of the blue whale (Balaenoptera musculus) in the Gulf of St. Lawrence, Canada
Sears, R., J.M. Williamson, F. Wenzel, M. Bérubé, D. Gendron and P.W. Jones. 1991. The Photographic identification of the blue whale (Balaenoptera musculus) in the Gulf of St. Lawrence, Canada. I W C Rep. SC/A88/ID23. pp. 335-342.