Northern Bald Ibis Conservation and Reintroduction Workshop Innsbruck. (2003). Northern Bald Ibis Conservation and Reintroduction Workshop: Proceedings of the International Advisory Group for the Northern Bald Ibis (IAGNBI) meeting Alpenzoo Innsbruck - Tirol, July 2003. RSPB.
Chicago-Zitierstil (17. Ausg.)Northern Bald Ibis Conservation and Reintroduction Workshop Innsbruck. Northern Bald Ibis Conservation and Reintroduction Workshop: Proceedings of the International Advisory Group for the Northern Bald Ibis (IAGNBI) Meeting Alpenzoo Innsbruck - Tirol, July 2003. Sandy: RSPB, 2003.
MLA-Zitierstil (9. Ausg.)Northern Bald Ibis Conservation and Reintroduction Workshop Innsbruck. Northern Bald Ibis Conservation and Reintroduction Workshop: Proceedings of the International Advisory Group for the Northern Bald Ibis (IAGNBI) Meeting Alpenzoo Innsbruck - Tirol, July 2003. RSPB, 2003.