(1987). The value of birds: Based on the proceedings of a symposium and workshop held at the XIX world conference of the International Council for Bird Preservation, June 1986, Queens University, Kingston, Ontario, Canada. Internat. Council for Bird Preservation.
Chicago-Zitierstil (17. Ausg.)The Value of Birds: Based on the Proceedings of a Symposium and Workshop Held at the XIX World Conference of the International Council for Bird Preservation, June 1986, Queens University, Kingston, Ontario, Canada. Cambridge: Internat. Council for Bird Preservation, 1987.
MLA-Zitierstil (9. Ausg.)The Value of Birds: Based on the Proceedings of a Symposium and Workshop Held at the XIX World Conference of the International Council for Bird Preservation, June 1986, Queens University, Kingston, Ontario, Canada. Internat. Council for Bird Preservation, 1987.