Παραπομπή σε μορφή APA (7η εκδ.)
European Union. Commission, BirdLife International, European Union. Office for Official Publications, Gallo - Orsi Umberto, & Schaffer Norbert. (2001). European Union action plans for eight priority bird species: Bittern (Botaurus stellaris), Ferruginous Duck (Aythya nyroca), Steller's Eider (Polysticta stelleri), Lammergeier (Gypaetus Barbatus) Greater Spotted Eagle (Aquila clanga), Lesser Spotted Eagle (Aquila pomarina), Bonelli's Eagle, Little Bustard. European Union. Office for Official Publications.
Παραπομπή σε μορφή Chicago (17η εκδ.)
European Union. Commission, BirdLife International, European Union. Office for Official Publications, Gallo - Orsi Umberto, και Schaffer Norbert. European Union Action Plans for Eight Priority Bird Species: Bittern (Botaurus Stellaris), Ferruginous Duck (Aythya Nyroca), Steller's Eider (Polysticta Stelleri), Lammergeier (Gypaetus Barbatus) Greater Spotted Eagle (Aquila Clanga), Lesser Spotted Eagle (Aquila Pomarina), Bonelli's Eagle, Little Bustard. European Union. Office for Official Publications, 2001.
Παραπομπή σε μορφή MLA (9th εκδ.)
European Union. Commission, et al. European Union Action Plans for Eight Priority Bird Species: Bittern (Botaurus Stellaris), Ferruginous Duck (Aythya Nyroca), Steller's Eider (Polysticta Stelleri), Lammergeier (Gypaetus Barbatus) Greater Spotted Eagle (Aquila Clanga), Lesser Spotted Eagle (Aquila Pomarina), Bonelli's Eagle, Little Bustard. European Union. Office for Official Publications, 2001.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.