APA (7th ed.) Zitazioa
Skov, H. (2011). Waterbird populations and pressures in the Baltic Sea. Nordic Council of Ministers.
Chicago Style (17th ed.) Zitazioa
Skov, Henrik. Waterbird Populations and Pressures in the Baltic Sea. Copenhagen: Nordic Council of Ministers, 2011.
MLA (9th ed.) Zitazioa
Skov, Henrik. Waterbird Populations and Pressures in the Baltic Sea. Nordic Council of Ministers, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.