Greenpeace. (2004). Resuing the North and Baltic Seas: Marine reserves - a key tool. [S.l.]: Greenpeace.
Chicago Style aipamenaGreenpeace. Resuing the North and Baltic Seas: Marine Reserves - a Key Tool. [S.l.]: Greenpeace, 2004.
MLA aipamenaGreenpeace. Resuing the North and Baltic Seas: Marine Reserves - a Key Tool. [S.l.]: Greenpeace, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.