Literature
  • 1982
  • Seals and Man: A Study of Interactions. University of Washington Press, Seattle. 170 pp.
  • 1990
  • The Natural History of Seals. Facts on File Publications, New York. 196 pp.
  • , Laws 1985
  • Marine mammals, pp. 401-456. In: FAO Species Identification Sheets for Fishery Purposes. Southern Ocean, Volume II (W. Fischer and J. C. Hureau, eds). Food and Agricultural Organization of the United Nations. 471 pp.