Seabirds on islands : threats, case studies and action plans /
Nettleship, David N.
Burger, Joanna.
Gochfeld, Michael.
BirdLife International.
International Council for Bird Preservation.World Conference(20th :1990 :Hamilton, New Zealand)
Cambridge : BirdLife International,
c1994.
"Proceedings of the Seabird Specialist Group Workshop held at the XX World Conference of the International Council for Bird Preservation, University of Waikato, Hamilton, New Zealand, 19-20 November 1990."